Common Weakness Enumeration

CWE-121

Allowed

Stack-based Buffer Overflow

Abstraction: Variant · Status: Draft

A stack-based buffer overflow condition is a condition where the buffer being overwritten is allocated on the stack (i.e., is a local variable or, rarely, a parameter to a function).

5203 vulnerabilities reference this CWE, most recent first.

CVE-2026-50318 (GCVE-0-2026-50318)

Vulnerability from cvelistv5 – Published: 2026-07-14 17:06 – Updated: 2026-07-15 10:52
VLAI
Title
Windows Resilient File System (ReFS) Elevation of Privilege Vulnerability
Summary
Stack-based buffer overflow in Windows Resilient File System (ReFS) allows an authorized attacker to elevate privileges locally.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-121 - Stack-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
Microsoft Windows 10 Version 1607 Affected: 10.0.14393.0 , < 10.0.14393.9339 (custom)
Create a notification for this product.
Microsoft Windows 10 Version 1809 Affected: 10.0.17763.0 , < 10.0.17763.9020 (custom)
Create a notification for this product.
Microsoft Windows 10 Version 21H2 Affected: 10.0.19044.0 , < 10.0.19044.7548 (custom)
Create a notification for this product.
Microsoft Windows 10 Version 22H2 Affected: 10.0.19045.0 , < 10.0.19045.7548 (custom)
Create a notification for this product.
Microsoft Windows 11 Version 24H2 Affected: 10.0.26100.0 , < 10.0.26100.8875 (custom)
Create a notification for this product.
Microsoft Windows 11 Version 25H2 Affected: 10.0.26200.0 , < 10.0.26200.8875 (custom)
Create a notification for this product.
Microsoft Windows 11 version 26H1 Affected: 10.0.28000.0 , < 10.0.28000.2525 (custom)
Create a notification for this product.
Microsoft Windows Server 2016 Affected: 10.0.14393.0 , < 10.0.14393.9339 (custom)
Create a notification for this product.
Microsoft Windows Server 2016 (Server Core installation) Affected: 10.0.14393.0 , < 10.0.14393.9339 (custom)
Create a notification for this product.
Microsoft Windows Server 2019 Affected: 10.0.17763.0 , < 10.0.17763.9020 (custom)
Create a notification for this product.
Microsoft Windows Server 2019 (Server Core installation) Affected: 10.0.17763.0 , < 10.0.17763.9020 (custom)
Create a notification for this product.
Microsoft Windows Server 2022 Affected: 10.0.20348.0 , < 10.0.20348.5386 (custom)
Create a notification for this product.
Microsoft Windows Server 2025 Affected: 10.0.26100.0 , < 10.0.26100.33158 (custom)
Create a notification for this product.
Microsoft Windows Server 2025 (Server Core installation) Affected: 10.0.26100.0 , < 10.0.26100.33158 (custom)
Create a notification for this product.
Date Public
2026-07-14 14:00
Show details on NVD website

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CVE-2026-50304 (GCVE-0-2026-50304)

Vulnerability from cvelistv5 – Published: 2026-07-14 17:06 – Updated: 2026-07-14 20:48
VLAI
Title
Windows Active Directory Federation Services Denial of Service Vulnerability
Summary
Stack-based buffer overflow in Active Directory Federation Services allows an unauthorized attacker to deny service over a network.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-121 - Stack-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
Microsoft Windows 10 Version 1607 Affected: 10.0.14393.0 , < 10.0.14393.9339 (custom)
Create a notification for this product.
Microsoft Windows 10 Version 1809 Affected: 10.0.17763.0 , < 10.0.17763.9020 (custom)
Create a notification for this product.
Microsoft Windows Server 2012 Affected: 6.2.9200.0 , < 6.2.9200.26226 (custom)
Create a notification for this product.
Microsoft Windows Server 2012 (Server Core installation) Affected: 6.2.9200.0 , < 6.2.9200.26226 (custom)
Create a notification for this product.
Microsoft Windows Server 2012 R2 Affected: 6.3.9600.0 , < 6.3.9600.23291 (custom)
Create a notification for this product.
Microsoft Windows Server 2012 R2 (Server Core installation) Affected: 6.3.9600.0 , < 6.3.9600.23291 (custom)
Create a notification for this product.
Microsoft Windows Server 2016 Affected: 10.0.14393.0 , < 10.0.14393.9339 (custom)
Create a notification for this product.
Microsoft Windows Server 2016 (Server Core installation) Affected: 10.0.14393.0 , < 10.0.14393.9339 (custom)
Create a notification for this product.
Microsoft Windows Server 2019 Affected: 10.0.17763.0 , < 10.0.17763.9020 (custom)
Create a notification for this product.
Microsoft Windows Server 2019 (Server Core installation) Affected: 10.0.17763.0 , < 10.0.17763.9020 (custom)
Create a notification for this product.
Microsoft Windows Server 2022 Affected: 10.0.20348.0 , < 10.0.20348.5386 (custom)
Create a notification for this product.
Microsoft Windows Server 2025 Affected: 10.0.26100.0 , < 10.0.26100.33158 (custom)
Create a notification for this product.
Microsoft Windows Server 2025 (Server Core installation) Affected: 10.0.26100.0 , < 10.0.26100.33158 (custom)
Create a notification for this product.
Date Public
2026-07-14 14:00
Show details on NVD website

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      "datePublic": "2026-07-14T14:00:00.000Z",
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}

CVE-2026-50259 (GCVE-0-2026-50259)

Vulnerability from cvelistv5 – Published: 2026-06-05 10:31 – Updated: 2026-07-15 00:47
VLAI
Title
Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: stack buffer overflow in xkb setmap request via mapwidths indexing
Summary
A stack-based buffer overflow flaw was found in the X.Org X server and Xwayland. _XkbSetMapChecks() declares a fixed-size stack buffer mapWidths[256] indexed by key type index. The helper function CheckKeyTypes() writes to this buffer at a client-controlled offset, allowing a stack buffer overflow. This may be used to crash the server, or for privilege escalation if the X server runs as root.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-121 - Stack-based Buffer Overflow
Assigner
References
URL Tags
https://access.redhat.com/errata/RHSA-2026:26562 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:26566 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:26590 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:26610 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:26709 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:28923 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:29844 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:36083 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:36085 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:36086 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:36087 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:36632 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:36633 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:36634 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:36768 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:36791 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:36792 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:36798 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:38502 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:38810 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-50259 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2485384 issue-trackingx_refsource_REDHAT
https://gitlab.freedesktop.org/xorg/xserver/-/com…
https://lists.x.org/archives/xorg-announce/2026-J…
https://redhat.atlassian.net/browse/PSIRTSUPT-16950
https://security.access.redhat.com/data/csaf/v2/v… x_sadp-csaf-vex
Impacted products
Vendor Product Version
Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:24.1.9-4.el10_2.2 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:10.2
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support Unaffected: 0:24.1.5-6.el10_0.1 , < * (rpm)
    cpe:/o:redhat:enterprise_linux_eus:10.0
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support Unaffected: 0:1.20.4-35.el7_9 , < * (rpm)
    cpe:/o:redhat:rhel_els:7
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:21.1.3-20.el8_10.2 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.20.11-28.el8_10.2 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8::appstream
    cpe:/a:redhat:enterprise_linux:8::crb
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.15.0-10.el8_10 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
    cpe:/a:redhat:rhel_aus:8.4::appstream
    cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
    cpe:/a:redhat:rhel_aus:8.4::appstream
    cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
    cpe:/a:redhat:rhel_aus:8.6::appstream
    cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:21.1.3-2.el8_6.7 , < * (rpm)
    cpe:/a:redhat:rhel_aus:8.6::appstream
    cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
    cpe:/a:redhat:rhel_aus:8.6::appstream
    cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Unaffected: 0:21.1.3-2.el8_6.7 , < * (rpm)
    cpe:/a:redhat:rhel_aus:8.6::appstream
    cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service Unaffected: 0:1.20.11-19.el8_8 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:8.8::appstream
    cpe:/a:redhat:rhel_tus:8.8::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service Unaffected: 0:21.1.3-13.el8_8.1 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:8.8::appstream
    cpe:/a:redhat:rhel_tus:8.8::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Unaffected: 0:1.20.11-19.el8_8 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:8.8::appstream
    cpe:/a:redhat:rhel_tus:8.8::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Unaffected: 0:21.1.3-13.el8_8.1 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:8.8::appstream
    cpe:/a:redhat:rhel_tus:8.8::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:24.1.9-4.el9_8.2 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/a:redhat:enterprise_linux:9::crb
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-34.el9_8.2 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/a:redhat:enterprise_linux:9::crb
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.15.0-7.el9_8.2 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:1.20.11-21.el9_2 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:9.2::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:21.1.3-10.el9_2.1 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:9.2::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:1.20.11-29.el9_4 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:9.4::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:22.1.9-8.el9_4.1 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:9.4::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:1.20.11-34.el9_6 , < * (rpm)
    cpe:/a:redhat:rhel_eus:9.6::appstream
    cpe:/a:redhat:rhel_eus:9.6::crb
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:23.2.7-6.el9_6.1 , < * (rpm)
    cpe:/a:redhat:rhel_eus:9.6::appstream
    cpe:/a:redhat:rhel_eus:9.6::crb
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
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Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
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Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:21.1.3-20.el8_10.2 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.20.11-28.el8_10.2 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.15.0-10.el8_10 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
    cpe:/a:redhat:rhel_aus:8.4
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
    cpe:/a:redhat:rhel_eus_long_life:8.4
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
    cpe:/a:redhat:rhel_aus:8.6
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:21.1.3-2.el8_6.7 , < * (rpm)
    cpe:/a:redhat:rhel_aus:8.6
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
    cpe:/a:redhat:rhel_eus_long_life:8.6
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Unaffected: 0:21.1.3-2.el8_6.7 , < * (rpm)
    cpe:/a:redhat:rhel_eus_long_life:8.6
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service Unaffected: 0:1.20.11-19.el8_8 , < * (rpm)
    cpe:/a:redhat:rhel_tus:8.8
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service Unaffected: 0:21.1.3-13.el8_8.1 , < * (rpm)
    cpe:/a:redhat:rhel_tus:8.8
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Unaffected: 0:1.20.11-19.el8_8 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:8.8
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Unaffected: 0:21.1.3-13.el8_8.1 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:8.8
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:24.1.9-4.el9_8.2 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-34.el9_8.2 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.15.0-7.el9_8.2 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:1.20.11-21.el9_2 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:9.2
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:21.1.3-10.el9_2.1 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:9.2
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:1.20.11-29.el9_4 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:9.4
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:22.1.9-8.el9_4.1 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:9.4
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:1.20.11-34.el9_6 , < * (rpm)
    cpe:/a:redhat:rhel_eus:9.6
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:23.2.7-6.el9_6.1 , < * (rpm)
    cpe:/a:redhat:rhel_eus:9.6
Create a notification for this product.
Date Public
2026-06-02 00:00
Credits
Upstream acknowledges Anonymous (Trend Micro Zero Day Initiative) as the original reporter.
Show details on NVD website

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    "cveId": "CVE-2026-50259",
    "datePublished": "2026-06-05T10:31:39.152Z",
    "dateReserved": "2026-06-04T14:55:24.011Z",
    "dateUpdated": "2026-07-15T00:47:02.438Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

CVE-2026-50258 (GCVE-0-2026-50258)

Vulnerability from cvelistv5 – Published: 2026-06-05 10:31 – Updated: 2026-07-15 00:47
VLAI
Title
Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: stack buffer overflow in xkb key types due to unchecked shift levels
Summary
A stack-based buffer overflow flaw was found in the X.Org X server and Xwayland. The X server has multiple stack buffers sized XkbMaxShiftLevel * XkbNumKbdGroups but CheckKeyTypes() does not verify or clamp non-canonical key types to XkbMaxShiftLevel. A client can change key types to excessive shift levels and trigger stack overflows. This is caused by an incomplete fix of CVE-2025-26597. This may be used to crash the server, or for privilege escalation if the X server runs as root.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-121 - Stack-based Buffer Overflow
Assigner
References
URL Tags
https://access.redhat.com/errata/RHSA-2026:26562 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:26566 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:26590 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:26610 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:26709 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:28923 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:29844 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:36083 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:36085 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:36086 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:36087 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:36632 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:36633 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:36634 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:36768 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:36791 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:36792 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:36798 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:38502 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:38810 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-50258 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2485383 issue-trackingx_refsource_REDHAT
https://gitlab.freedesktop.org/xorg/xserver/-/com…
https://lists.x.org/archives/xorg-announce/2026-J…
https://redhat.atlassian.net/browse/PSIRTSUPT-16950
https://security.access.redhat.com/data/csaf/v2/v… x_sadp-csaf-vex
Impacted products
Vendor Product Version
Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:24.1.9-4.el10_2.2 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:10.2
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support Unaffected: 0:24.1.5-6.el10_0.1 , < * (rpm)
    cpe:/o:redhat:enterprise_linux_eus:10.0
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support Unaffected: 0:1.20.4-35.el7_9 , < * (rpm)
    cpe:/o:redhat:rhel_els:7
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:21.1.3-20.el8_10.2 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.20.11-28.el8_10.2 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8::appstream
    cpe:/a:redhat:enterprise_linux:8::crb
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.15.0-10.el8_10 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
    cpe:/a:redhat:rhel_aus:8.4::appstream
    cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
    cpe:/a:redhat:rhel_aus:8.4::appstream
    cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
    cpe:/a:redhat:rhel_aus:8.6::appstream
    cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:21.1.3-2.el8_6.7 , < * (rpm)
    cpe:/a:redhat:rhel_aus:8.6::appstream
    cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
    cpe:/a:redhat:rhel_aus:8.6::appstream
    cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Unaffected: 0:21.1.3-2.el8_6.7 , < * (rpm)
    cpe:/a:redhat:rhel_aus:8.6::appstream
    cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service Unaffected: 0:1.20.11-19.el8_8 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:8.8::appstream
    cpe:/a:redhat:rhel_tus:8.8::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service Unaffected: 0:21.1.3-13.el8_8.1 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:8.8::appstream
    cpe:/a:redhat:rhel_tus:8.8::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Unaffected: 0:1.20.11-19.el8_8 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:8.8::appstream
    cpe:/a:redhat:rhel_tus:8.8::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Unaffected: 0:21.1.3-13.el8_8.1 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:8.8::appstream
    cpe:/a:redhat:rhel_tus:8.8::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:24.1.9-4.el9_8.2 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/a:redhat:enterprise_linux:9::crb
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-34.el9_8.2 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/a:redhat:enterprise_linux:9::crb
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.15.0-7.el9_8.2 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:1.20.11-21.el9_2 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:9.2::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:21.1.3-10.el9_2.1 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:9.2::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:1.20.11-29.el9_4 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:9.4::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:22.1.9-8.el9_4.1 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:9.4::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:1.20.11-34.el9_6 , < * (rpm)
    cpe:/a:redhat:rhel_eus:9.6::appstream
    cpe:/a:redhat:rhel_eus:9.6::crb
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:23.2.7-6.el9_6.1 , < * (rpm)
    cpe:/a:redhat:rhel_eus:9.6::appstream
    cpe:/a:redhat:rhel_eus:9.6::crb
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:21.1.3-20.el8_10.2 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.20.11-28.el8_10.2 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.15.0-10.el8_10 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
    cpe:/a:redhat:rhel_aus:8.4
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
    cpe:/a:redhat:rhel_eus_long_life:8.4
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
    cpe:/a:redhat:rhel_aus:8.6
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:21.1.3-2.el8_6.7 , < * (rpm)
    cpe:/a:redhat:rhel_aus:8.6
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
    cpe:/a:redhat:rhel_eus_long_life:8.6
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Unaffected: 0:21.1.3-2.el8_6.7 , < * (rpm)
    cpe:/a:redhat:rhel_eus_long_life:8.6
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service Unaffected: 0:1.20.11-19.el8_8 , < * (rpm)
    cpe:/a:redhat:rhel_tus:8.8
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service Unaffected: 0:21.1.3-13.el8_8.1 , < * (rpm)
    cpe:/a:redhat:rhel_tus:8.8
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Unaffected: 0:1.20.11-19.el8_8 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:8.8
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Unaffected: 0:21.1.3-13.el8_8.1 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:8.8
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:24.1.9-4.el9_8.2 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-34.el9_8.2 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.15.0-7.el9_8.2 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:1.20.11-21.el9_2 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:9.2
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:21.1.3-10.el9_2.1 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:9.2
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:1.20.11-29.el9_4 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:9.4
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:22.1.9-8.el9_4.1 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:9.4
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:1.20.11-34.el9_6 , < * (rpm)
    cpe:/a:redhat:rhel_eus:9.6
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:23.2.7-6.el9_6.1 , < * (rpm)
    cpe:/a:redhat:rhel_eus:9.6
Create a notification for this product.
Date Public
2026-06-02 00:00
Credits
Upstream acknowledges Anonymous (Trend Micro Zero Day Initiative) as the original reporter.
Show details on NVD website

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CVE-2026-50256 (GCVE-0-2026-50256)

Vulnerability from cvelistv5 – Published: 2026-06-05 10:31 – Updated: 2026-07-15 00:47
VLAI
Title
Xorg-x11-server: xorg-x11-server-xwayland: xorg-x11-server: stack buffer overflow in font alias resolution due to libxfont2 name length mismatch
Summary
A stack-based buffer overflow flaw was found in the X.Org X server and Xwayland. A mismatch between the X server and the libXfont2 library's maximum font name length can cause a stack buffer overflow during font alias resolution. The server allocates a 256 byte stack buffer but libXfont2's alias target name length is 1024 bytes. A font alias name between 257 and 1023 bytes causes the X server to copy that name into the undersized stack buffer without further checks. This may be used to crash the server, or for privilege escalation if the X server runs as root.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-121 - Stack-based Buffer Overflow
Assigner
References
URL Tags
https://access.redhat.com/errata/RHSA-2026:26562 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:26566 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:26590 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:26610 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:26709 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:28923 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:29844 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:36083 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:36085 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:36086 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:36087 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:36632 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:36633 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:36634 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:36768 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:36791 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:36792 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:36798 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:38502 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:38810 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-50256 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2485380 issue-trackingx_refsource_REDHAT
https://gitlab.freedesktop.org/xorg/xserver/-/com…
https://lists.x.org/archives/xorg-announce/2026-J…
https://redhat.atlassian.net/browse/PSIRTSUPT-16950
https://security.access.redhat.com/data/csaf/v2/v… x_sadp-csaf-vex
Impacted products
Vendor Product Version
Red Hat Red Hat Enterprise Linux 10 Unaffected: 0:24.1.9-4.el10_2.2 , < * (rpm)
    cpe:/o:redhat:enterprise_linux:10.2
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 10.0 Extended Update Support Unaffected: 0:24.1.5-6.el10_0.1 , < * (rpm)
    cpe:/o:redhat:enterprise_linux_eus:10.0
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 7 Extended Lifecycle Support Unaffected: 0:1.20.4-35.el7_9 , < * (rpm)
    cpe:/o:redhat:rhel_els:7
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:21.1.3-20.el8_10.2 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8::appstream
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Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.20.11-28.el8_10.2 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8::appstream
    cpe:/a:redhat:enterprise_linux:8::crb
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Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.15.0-10.el8_10 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8::appstream
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Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
    cpe:/a:redhat:rhel_aus:8.4::appstream
    cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
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Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
    cpe:/a:redhat:rhel_aus:8.4::appstream
    cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
Create a notification for this product.
Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
    cpe:/a:redhat:rhel_aus:8.6::appstream
    cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
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Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:21.1.3-2.el8_6.7 , < * (rpm)
    cpe:/a:redhat:rhel_aus:8.6::appstream
    cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
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Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
    cpe:/a:redhat:rhel_aus:8.6::appstream
    cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
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Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Unaffected: 0:21.1.3-2.el8_6.7 , < * (rpm)
    cpe:/a:redhat:rhel_aus:8.6::appstream
    cpe:/a:redhat:rhel_eus_long_life:8.6::appstream
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Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service Unaffected: 0:1.20.11-19.el8_8 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:8.8::appstream
    cpe:/a:redhat:rhel_tus:8.8::appstream
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Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service Unaffected: 0:21.1.3-13.el8_8.1 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:8.8::appstream
    cpe:/a:redhat:rhel_tus:8.8::appstream
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Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Unaffected: 0:1.20.11-19.el8_8 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:8.8::appstream
    cpe:/a:redhat:rhel_tus:8.8::appstream
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Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Unaffected: 0:21.1.3-13.el8_8.1 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:8.8::appstream
    cpe:/a:redhat:rhel_tus:8.8::appstream
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Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:24.1.9-4.el9_8.2 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/a:redhat:enterprise_linux:9::crb
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Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-34.el9_8.2 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
    cpe:/a:redhat:enterprise_linux:9::crb
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Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.15.0-7.el9_8.2 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9::appstream
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Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:1.20.11-21.el9_2 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:9.2::appstream
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Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:21.1.3-10.el9_2.1 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:9.2::appstream
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Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:1.20.11-29.el9_4 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:9.4::appstream
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Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:22.1.9-8.el9_4.1 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:9.4::appstream
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Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:1.20.11-34.el9_6 , < * (rpm)
    cpe:/a:redhat:rhel_eus:9.6::appstream
    cpe:/a:redhat:rhel_eus:9.6::crb
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Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:23.2.7-6.el9_6.1 , < * (rpm)
    cpe:/a:redhat:rhel_eus:9.6::appstream
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Red Hat Red Hat Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
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Red Hat Red Hat Enterprise Linux 7     cpe:/o:redhat:enterprise_linux:7
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Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:21.1.3-20.el8_10.2 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8
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Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.20.11-28.el8_10.2 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8
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Red Hat Red Hat Enterprise Linux 8 Unaffected: 0:1.15.0-10.el8_10 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:8
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Red Hat Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
    cpe:/a:redhat:rhel_aus:8.4
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Red Hat Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.10-5.el8_4 , < * (rpm)
    cpe:/a:redhat:rhel_eus_long_life:8.4
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Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
    cpe:/a:redhat:rhel_aus:8.6
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Red Hat Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support Unaffected: 0:21.1.3-2.el8_6.7 , < * (rpm)
    cpe:/a:redhat:rhel_aus:8.6
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Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Unaffected: 0:1.20.11-8.el8_6 , < * (rpm)
    cpe:/a:redhat:rhel_eus_long_life:8.6
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Red Hat Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On Unaffected: 0:21.1.3-2.el8_6.7 , < * (rpm)
    cpe:/a:redhat:rhel_eus_long_life:8.6
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Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service Unaffected: 0:1.20.11-19.el8_8 , < * (rpm)
    cpe:/a:redhat:rhel_tus:8.8
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Red Hat Red Hat Enterprise Linux 8.8 Telecommunications Update Service Unaffected: 0:21.1.3-13.el8_8.1 , < * (rpm)
    cpe:/a:redhat:rhel_tus:8.8
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Red Hat Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions Unaffected: 0:1.20.11-19.el8_8 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:8.8
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    cpe:/a:redhat:rhel_e4s:8.8
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Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:24.1.9-4.el9_8.2 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9
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Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.20.11-34.el9_8.2 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9
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Red Hat Red Hat Enterprise Linux 9 Unaffected: 0:1.15.0-7.el9_8.2 , < * (rpm)
    cpe:/a:redhat:enterprise_linux:9
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Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:1.20.11-21.el9_2 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:9.2
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Red Hat Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions Unaffected: 0:21.1.3-10.el9_2.1 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:9.2
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Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:1.20.11-29.el9_4 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:9.4
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Red Hat Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions Unaffected: 0:22.1.9-8.el9_4.1 , < * (rpm)
    cpe:/a:redhat:rhel_e4s:9.4
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Red Hat Red Hat Enterprise Linux 9.6 Extended Update Support Unaffected: 0:1.20.11-34.el9_6 , < * (rpm)
    cpe:/a:redhat:rhel_eus:9.6
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Date Public
2026-06-02 00:00
Credits
Upstream acknowledges Anonymous (Trend Micro Zero Day Initiative) as the original reporter.
Show details on NVD website

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-50256",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-10T03:58:53.147448Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-10T13:34:18.431Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      },
      {
        "affected": [
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/o:redhat:enterprise_linux:10.2"
            ],
            "defaultStatus": "affected",
            "packageName": "xorg-x11-server-Xwayland",
            "product": "Red Hat Enterprise Linux 10",
            "vendor": "Red Hat",
            "versions": [
              {
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                "status": "unaffected",
                "version": "0:24.1.9-4.el10_2.2",
                "versionType": "rpm"
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            ]
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/o:redhat:enterprise_linux_eus:10.0"
            ],
            "defaultStatus": "affected",
            "packageName": "xorg-x11-server-Xwayland",
            "product": "Red Hat Enterprise Linux 10.0 Extended Update Support",
            "vendor": "Red Hat",
            "versions": [
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "0:24.1.5-6.el10_0.1",
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            ]
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/o:redhat:rhel_els:7"
            ],
            "defaultStatus": "affected",
            "packageName": "xorg-x11-server",
            "product": "Red Hat Enterprise Linux 7 Extended Lifecycle Support",
            "vendor": "Red Hat",
            "versions": [
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "0:1.20.4-35.el7_9",
                "versionType": "rpm"
              }
            ]
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:enterprise_linux:8"
            ],
            "defaultStatus": "affected",
            "packageName": "xorg-x11-server-Xwayland",
            "product": "Red Hat Enterprise Linux 8",
            "vendor": "Red Hat",
            "versions": [
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "0:21.1.3-20.el8_10.2",
                "versionType": "rpm"
              }
            ]
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:enterprise_linux:8"
            ],
            "defaultStatus": "affected",
            "packageName": "xorg-x11-server",
            "product": "Red Hat Enterprise Linux 8",
            "vendor": "Red Hat",
            "versions": [
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "0:1.20.11-28.el8_10.2",
                "versionType": "rpm"
              }
            ]
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:enterprise_linux:8"
            ],
            "defaultStatus": "affected",
            "packageName": "tigervnc",
            "product": "Red Hat Enterprise Linux 8",
            "vendor": "Red Hat",
            "versions": [
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "0:1.15.0-10.el8_10",
                "versionType": "rpm"
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            ]
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:rhel_aus:8.4"
            ],
            "defaultStatus": "affected",
            "packageName": "xorg-x11-server",
            "product": "Red Hat Enterprise Linux 8.4 Advanced Mission Critical Update Support",
            "vendor": "Red Hat",
            "versions": [
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "0:1.20.10-5.el8_4",
                "versionType": "rpm"
              }
            ]
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:rhel_eus_long_life:8.4"
            ],
            "defaultStatus": "affected",
            "packageName": "xorg-x11-server",
            "product": "Red Hat Enterprise Linux 8.4 Extended Update Support Long-Life Add-On",
            "vendor": "Red Hat",
            "versions": [
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "0:1.20.10-5.el8_4",
                "versionType": "rpm"
              }
            ]
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:rhel_aus:8.6"
            ],
            "defaultStatus": "affected",
            "packageName": "xorg-x11-server",
            "product": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support",
            "vendor": "Red Hat",
            "versions": [
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "0:1.20.11-8.el8_6",
                "versionType": "rpm"
              }
            ]
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:rhel_aus:8.6"
            ],
            "defaultStatus": "affected",
            "packageName": "xorg-x11-server-Xwayland",
            "product": "Red Hat Enterprise Linux 8.6 Advanced Mission Critical Update Support",
            "vendor": "Red Hat",
            "versions": [
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "0:21.1.3-2.el8_6.7",
                "versionType": "rpm"
              }
            ]
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:rhel_eus_long_life:8.6"
            ],
            "defaultStatus": "affected",
            "packageName": "xorg-x11-server",
            "product": "Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On",
            "vendor": "Red Hat",
            "versions": [
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "0:1.20.11-8.el8_6",
                "versionType": "rpm"
              }
            ]
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:rhel_eus_long_life:8.6"
            ],
            "defaultStatus": "affected",
            "packageName": "xorg-x11-server-Xwayland",
            "product": "Red Hat Enterprise Linux 8.6 Extended Update Support Long-Life Add-On",
            "vendor": "Red Hat",
            "versions": [
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "0:21.1.3-2.el8_6.7",
                "versionType": "rpm"
              }
            ]
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:rhel_tus:8.8"
            ],
            "defaultStatus": "affected",
            "packageName": "xorg-x11-server",
            "product": "Red Hat Enterprise Linux 8.8 Telecommunications Update Service",
            "vendor": "Red Hat",
            "versions": [
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "0:1.20.11-19.el8_8",
                "versionType": "rpm"
              }
            ]
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:rhel_tus:8.8"
            ],
            "defaultStatus": "affected",
            "packageName": "xorg-x11-server-Xwayland",
            "product": "Red Hat Enterprise Linux 8.8 Telecommunications Update Service",
            "vendor": "Red Hat",
            "versions": [
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "0:21.1.3-13.el8_8.1",
                "versionType": "rpm"
              }
            ]
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:rhel_e4s:8.8"
            ],
            "defaultStatus": "affected",
            "packageName": "xorg-x11-server",
            "product": "Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions",
            "vendor": "Red Hat",
            "versions": [
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "0:1.20.11-19.el8_8",
                "versionType": "rpm"
              }
            ]
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:rhel_e4s:8.8"
            ],
            "defaultStatus": "affected",
            "packageName": "xorg-x11-server-Xwayland",
            "product": "Red Hat Enterprise Linux 8.8 Update Services for SAP Solutions",
            "vendor": "Red Hat",
            "versions": [
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "0:21.1.3-13.el8_8.1",
                "versionType": "rpm"
              }
            ]
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:enterprise_linux:9"
            ],
            "defaultStatus": "affected",
            "packageName": "xorg-x11-server-Xwayland",
            "product": "Red Hat Enterprise Linux 9",
            "vendor": "Red Hat",
            "versions": [
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "0:24.1.9-4.el9_8.2",
                "versionType": "rpm"
              }
            ]
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:enterprise_linux:9"
            ],
            "defaultStatus": "affected",
            "packageName": "xorg-x11-server",
            "product": "Red Hat Enterprise Linux 9",
            "vendor": "Red Hat",
            "versions": [
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "0:1.20.11-34.el9_8.2",
                "versionType": "rpm"
              }
            ]
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:enterprise_linux:9"
            ],
            "defaultStatus": "affected",
            "packageName": "tigervnc",
            "product": "Red Hat Enterprise Linux 9",
            "vendor": "Red Hat",
            "versions": [
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "0:1.15.0-7.el9_8.2",
                "versionType": "rpm"
              }
            ]
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:rhel_e4s:9.2"
            ],
            "defaultStatus": "affected",
            "packageName": "xorg-x11-server",
            "product": "Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions",
            "vendor": "Red Hat",
            "versions": [
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "0:1.20.11-21.el9_2",
                "versionType": "rpm"
              }
            ]
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:rhel_e4s:9.2"
            ],
            "defaultStatus": "affected",
            "packageName": "xorg-x11-server-Xwayland",
            "product": "Red Hat Enterprise Linux 9.2 Update Services for SAP Solutions",
            "vendor": "Red Hat",
            "versions": [
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "0:21.1.3-10.el9_2.1",
                "versionType": "rpm"
              }
            ]
          },
          {
            "collectionURL": "https://access.redhat.com/downloads/content/package-browser/",
            "cpes": [
              "cpe:/a:redhat:rhel_e4s:9.4"
            ],
            "defaultStatus": "affected",
            "packageName": "xorg-x11-server",
            "product": "Red Hat Enterprise Linux 9.4 Update Services for SAP Solutions",
            "vendor": "Red Hat",
            "versions": [
              {
                "lessThan": "*",
                "status": "unaffected",
                "version": "0:1.20.11-29.el9_4",
                "versionType": "rpm"
              }
            ]
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CVE-2026-50031 (GCVE-0-2026-50031)

Vulnerability from cvelistv5 – Published: 2026-06-03 03:07 – Updated: 2026-06-03 13:40
VLAI
Summary
ipmi-oem in FreeIPMI before 1.6.18 has exploitable buffer overflows on response messages. The Intelligent Platform Management Interface (IPMI) specification defines a set of interfaces for platform management. It is implemented by a large number of hardware manufacturers to support system management. It is most commonly used for sensor reading (e.g., CPU temperatures through the ipmi-sensors command within FreeIPMI) and remote power control (the ipmipower command). The ipmi-oem client command implements a set of a IPMI OEM commands for specific hardware vendors. If a user has supported hardware, they may wish to use the ipmi-oem command to send a request to a server to retrieve specific information. Two subcommands "ipmi-oem dell get-active-directory-config" and "ipmi-oem fujitsu get-sel-entry-long-text" were found to have exploitable buffer overflows on response messages.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-121 - Stack-based Buffer Overflow
Assigner
Impacted products
Vendor Product Version
FreeIPMI FreeIPMI Affected: 0.7.12 , < 1.6.18 (semver)
Create a notification for this product.
Show details on NVD website

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CVE-2026-49943 (GCVE-0-2026-49943)

Vulnerability from cvelistv5 – Published: 2026-06-02 16:16 – Updated: 2026-06-02 18:24
VLAI
Summary
CZ.NIC BIRD Internet Routing Daemon through 2.19.0 contains a stack-based buffer overflow in the BGP AS_PATH mask matching implementation in nest/a-path.c. The as_path_match() function uses a fixed-size stack array of 2048 + 1 pm_pos entries, while parse_path() expands AS_PATH segments from a received BGP UPDATE without enforcing a corresponding capacity limit. When RFC 8654 BGP Extended Messages are enabled and a BIRD filter evaluates an AS path mask expression such as "bgp_path ~ [= ... =]", an established BGP peer can send a long AS_PATH containing more than 2048 expanded ASNs. This causes parse_path()/as_path_match() to write beyond the fixed stack buffer, resulting in a crash of the daemon. NOTE: reportedly, the Supplier's position is that a fix is not being prioritized because all network operators should already be rejecting routes with unusually long attributes.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-121 - Stack-based Buffer Overflow
Assigner
Impacted products
Vendor Product Version
NIC BIRD Affected: 0 , ≤ 2.19.0 (semver)
Create a notification for this product.
Show details on NVD website

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CVE-2026-49789 (GCVE-0-2026-49789)

Vulnerability from cvelistv5 – Published: 2026-07-14 17:05 – Updated: 2026-07-15 03:57
VLAI
Title
Windows NTFS Elevation of Privilege Vulnerability
Summary
Stack-based buffer overflow in Windows NTFS allows an authorized attacker to elevate privileges locally.
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-121 - Stack-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
Microsoft Windows 10 Version 1607 Affected: 10.0.14393.0 , < 10.0.14393.9339 (custom)
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Microsoft Windows 10 Version 1809 Affected: 10.0.17763.0 , < 10.0.17763.9020 (custom)
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Microsoft Windows 10 Version 21H2 Affected: 10.0.19044.0 , < 10.0.19044.7548 (custom)
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Microsoft Windows 10 Version 22H2 Affected: 10.0.19045.0 , < 10.0.19045.7548 (custom)
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Microsoft Windows 11 Version 24H2 Affected: 10.0.26100.0 , < 10.0.26100.8875 (custom)
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Microsoft Windows 11 Version 25H2 Affected: 10.0.26200.0 , < 10.0.26200.8875 (custom)
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Microsoft Windows 11 version 26H1 Affected: 10.0.28000.0 , < 10.0.28000.2269 (custom)
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Microsoft Windows Server 2012 Affected: 6.2.9200.0 , < 6.2.9200.26226 (custom)
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Microsoft Windows Server 2012 (Server Core installation) Affected: 6.2.9200.0 , < 6.2.9200.26226 (custom)
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Microsoft Windows Server 2012 R2 Affected: 6.3.9600.0 , < 6.3.9600.23291 (custom)
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Microsoft Windows Server 2012 R2 (Server Core installation) Affected: 6.3.9600.0 , < 6.3.9600.23291 (custom)
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Microsoft Windows Server 2016 Affected: 10.0.14393.0 , < 10.0.14393.9339 (custom)
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Microsoft Windows Server 2016 (Server Core installation) Affected: 10.0.14393.0 , < 10.0.14393.9339 (custom)
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Microsoft Windows Server 2019 Affected: 10.0.17763.0 , < 10.0.17763.9020 (custom)
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Microsoft Windows Server 2019 (Server Core installation) Affected: 10.0.17763.0 , < 10.0.17763.9020 (custom)
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Microsoft Windows Server 2022 Affected: 10.0.20348.0 , < 10.0.20348.5386 (custom)
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Microsoft Windows Server 2025 Affected: 10.0.26100.0 , < 10.0.26100.33158 (custom)
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Microsoft Windows Server 2025 (Server Core installation) Affected: 10.0.26100.0 , < 10.0.26100.33158 (custom)
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Date Public
2026-07-14 14:00
Show details on NVD website

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CVE-2026-49760 (GCVE-0-2026-49760)

Vulnerability from cvelistv5 – Published: 2026-06-10 14:35 – Updated: 2026-06-11 04:45
VLAI
Title
Stack Buffer Overflow in ei_s_print_term at Very Large Integer
Summary
Stack-based Buffer Overflow vulnerability in Erlang OTP (erl_interface) allows Stack-based Buffer Overflow. This vulnerability is associated with program file lib/erl_interface/src/misc/ei_printterm.c and program routine ei_s_print_term. The C function ei_s_print_term uses an internal 2000-character stack buffer to format terms. When called with an encoded Erlang term containing a very large integer (encoded representation exceeding 2000 characters), the buffer overflows. The overflow bytes are restricted to the ASCII values of 0-9 and A-F, which limits exploitation to Denial of Service. The companion function ei_print_term, which prints directly to a FILE instead of a memory buffer, does not contain this bug. This issue affects OTP from OTP 17.0 before 27.3.4.13, 28.5.0.2 and 29.0.2, corresponding to erl_interface from 3.7.16 before 5.5.2.1, 5.7.0.1 and 5.8.1.
SSVC
Exploitation: none Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-121 - Stack-based Buffer Overflow
Assigner
EEF
Impacted products
Vendor Product Version
Erlang OTP Affected: 3.7.16 , < * (otp)
    cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:*
Create a notification for this product.
Erlang OTP Affected: 17.0 , < * (otp)
Affected: 84adefa331c4159d432d22840663c38f155cd4c1 , < 0bef277b2d39dc8babb9ceb4f5d0a456f3007111 (git)
    cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:*
Create a notification for this product.
Credits
Jonatan Männchen / EEF Sverker Eriksson
Show details on NVD website

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CVE-2026-49759 (GCVE-0-2026-49759)

Vulnerability from cvelistv5 – Published: 2026-06-10 14:35 – Updated: 2026-07-15 04:14
VLAI
Title
Stack buffer overflow in SCTP error cause parsing in inet_drv allows remote VM crash
Summary
Stack-based Buffer Overflow vulnerability in Erlang OTP erts (inet_drv) allows an unauthenticated remote attacker to crash the BEAM VM by sending a crafted SCTP ERROR chunk. The sctp_parse_error_chunk function in erts/emulator/drivers/common/inet_drv.c parses SCTP ERROR chunks and writes cause codes into a fixed-size stack-allocated ErlDrvTermData spec[] array without checking bounds. A remote attacker who has established an SCTP association to a listening port can send a single crafted SCTP ERROR chunk containing enough cause codes to overflow the stack buffer, crashing the VM. The attacker can only write 16-bit values interleaved with a fixed tag, so the overflow does not provide a controlled return address, limiting exploitation to Denial of Service. A crafted SCTP ERROR chunk may also leak bits and pieces of Erlang VM memory into the received error packet observed by the Erlang process. Such data is already readable by the user running the Erlang VM, so the disclosure scope is limited. This issue affects OTP from OTP 17.0 before 27.3.4.13, 28.5.0.2 and 29.0.2, corresponding to erts from 6.0 before 15.2.7.9, 16.4.0.2 and 17.0.2.
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-121 - Stack-based Buffer Overflow
  • CWE-120 - Buffer Copy without Checking Size of Input ('Classic Buffer Overflow')
Assigner
EEF
Impacted products
Vendor Product Version
Erlang OTP Affected: 6.0 , < * (otp)
    cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:*
Create a notification for this product.
Erlang OTP Affected: 17.0 , < * (otp)
Affected: 84adefa331c4159d432d22840663c38f155cd4c1 , < 3983d495284331c121f600a80bac9fcf4e16381e (git)
    cpe:2.3:a:erlang:erlang\/otp:*:*:*:*:*:*:*:*
Create a notification for this product.
Red Hat Red Hat OpenStack Platform 16.2     cpe:/a:redhat:openstack:16.2
Create a notification for this product.
Red Hat Red Hat OpenStack Platform 17.1     cpe:/a:redhat:openstack:17.1
Create a notification for this product.
Red Hat Red Hat OpenStack Platform 18.0     cpe:/a:redhat:openstack:18.0
Create a notification for this product.
Credits
Zhang Delong Raimo Niskanen
Show details on NVD website

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          "value": "Stack-based Buffer Overflow vulnerability in Erlang OTP erts (inet_drv) allows an unauthenticated remote attacker to crash the BEAM VM by sending a crafted SCTP ERROR chunk.\n\nThe sctp_parse_error_chunk function in erts/emulator/drivers/common/inet_drv.c parses SCTP ERROR chunks and writes cause codes into a fixed-size stack-allocated ErlDrvTermData spec[] array without checking bounds. A remote attacker who has established an SCTP association to a listening port can send a single crafted SCTP ERROR chunk containing enough cause codes to overflow the stack buffer, crashing the VM. The attacker can only write 16-bit values interleaved with a fixed tag, so the overflow does not provide a controlled return address, limiting exploitation to Denial of Service.\n\nA crafted SCTP ERROR chunk may also leak bits and pieces of Erlang VM memory into the received error packet observed by the Erlang process. Such data is already readable by the user running the Erlang VM, so the disclosure scope is limited.\n\nThis issue affects OTP from OTP 17.0 before 27.3.4.13, 28.5.0.2 and 29.0.2, corresponding to erts from 6.0 before 15.2.7.9, 16.4.0.2 and 17.0.2."
        }
      ],
      "impacts": [
        {
          "capecId": "CAPEC-100",
          "descriptions": [
            {
              "lang": "en",
              "value": "CAPEC-100 Overflow Buffers"
            }
          ]
        }
      ],
      "metrics": [
        {
          "cvssV4_0": {
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "privilegesRequired": "NONE",
            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "NONE",
            "subIntegrityImpact": "NONE",
            "userInteraction": "NONE",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N",
            "version": "4.0",
            "vulnAvailabilityImpact": "HIGH",
            "vulnConfidentialityImpact": "LOW",
            "vulnIntegrityImpact": "NONE"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-121",
              "description": "CWE-121 Stack-based Buffer Overflow",
              "lang": "en",
              "type": "CWE"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-07-15T04:14:13.329Z",
        "orgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
        "shortName": "EEF"
      },
      "references": [
        {
          "tags": [
            "vendor-advisory",
            "related"
          ],
          "url": "https://github.com/erlang/otp/security/advisories/GHSA-6f4f-chj5-5g97"
        },
        {
          "tags": [
            "related"
          ],
          "url": "https://cna.erlef.org/cves/CVE-2026-49759.html"
        },
        {
          "tags": [
            "related"
          ],
          "url": "https://osv.dev/vulnerability/EEF-CVE-2026-49759"
        },
        {
          "tags": [
            "x_version-scheme"
          ],
          "url": "https://www.erlang.org/doc/system/versions.html#order-of-versions"
        },
        {
          "tags": [
            "patch"
          ],
          "url": "https://github.com/erlang/otp/commit/3983d495284331c121f600a80bac9fcf4e16381e"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "Stack buffer overflow in SCTP error cause parsing in inet_drv allows remote VM crash",
      "x_generator": {
        "engine": "cvelib 1.8.0"
      }
    }
  },
  "cveMetadata": {
    "assignerOrgId": "6b3ad84c-e1a6-4bf7-a703-f496b71e49db",
    "assignerShortName": "EEF",
    "cveId": "CVE-2026-49759",
    "datePublished": "2026-06-10T14:35:38.838Z",
    "dateReserved": "2026-06-01T13:45:22.449Z",
    "dateUpdated": "2026-07-15T04:14:13.329Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

Mitigation MIT-10
Operation Build and Compilation

Strategy: Environment Hardening

  • Use automatic buffer overflow detection mechanisms that are offered by certain compilers or compiler extensions. Examples include: the Microsoft Visual Studio /GS flag, Fedora/Red Hat FORTIFY_SOURCE GCC flag, StackGuard, and ProPolice, which provide various mechanisms including canary-based detection and range/index checking.
  • D3-SFCV (Stack Frame Canary Validation) from D3FEND [REF-1334] discusses canary-based detection in detail.
Mitigation
Architecture and Design

Use an abstraction library to abstract away risky APIs. Not a complete solution.

Mitigation
Implementation

Implement and perform bounds checking on input.

Mitigation
Implementation

Do not use dangerous functions such as gets. Use safer, equivalent functions which check for boundary errors.

Mitigation MIT-11
Operation Build and Compilation

Strategy: Environment Hardening

  • Run or compile the software using features or extensions that randomly arrange the positions of a program's executable and libraries in memory. Because this makes the addresses unpredictable, it can prevent an attacker from reliably jumping to exploitable code.
  • Examples include Address Space Layout Randomization (ASLR) [REF-58] [REF-60] and Position-Independent Executables (PIE) [REF-64]. Imported modules may be similarly realigned if their default memory addresses conflict with other modules, in a process known as "rebasing" (for Windows) and "prelinking" (for Linux) [REF-1332] using randomly generated addresses. ASLR for libraries cannot be used in conjunction with prelink since it would require relocating the libraries at run-time, defeating the whole purpose of prelinking.
  • For more information on these techniques see D3-SAOR (Segment Address Offset Randomization) from D3FEND [REF-1335].

No CAPEC attack patterns related to this CWE.