CVE-2026-32203 (GCVE-0-2026-32203)

Vulnerability from cvelistv5 – Published: 2026-04-14 16:58 – Updated: 2026-06-30 02:43
VLAI
Title
.NET and Visual Studio Denial of Service Vulnerability
Summary
Stack-based buffer overflow in .NET and Visual Studio allows an unauthorized attacker to deny service over a network.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-121 - Stack-based Buffer Overflow
  • CWE-20 - Improper Input Validation
  • CWE-787 - Out-of-bounds Write
Assigner
References
URL Tags
https://msrc.microsoft.com/update-guide/vulnerabi… vendor-advisorypatch
https://access.redhat.com/security/cve/CVE-2026-32203 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2457740 issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v… x_sadp-csaf-vex
https://access.redhat.com/errata/RHSA-2026:13281 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:13280 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:8467 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:8470 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:8472 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:8473 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:8468 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:8475 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:13693 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:13283 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:13282 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:8471 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:8469 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:8474 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:9077 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:9080 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:9205 vendor-advisoryx_refsource_REDHAT
Impacted products
Vendor Product Version
Microsoft .NET 10.0 Affected: 10.0.0 , < 10.0.6 (custom)
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Microsoft .NET 8.0 Affected: 8.0.0 , < 8.0.26 (custom)
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Microsoft .NET 9.0 Affected: 9.0.0 , < 9.0.15 (custom)
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Microsoft Microsoft Visual Studio 2022 version 17.12 Affected: 17.12.0 , < 17.12.19 (custom)
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Microsoft Microsoft Visual Studio 2022 version 17.14 Affected: 17.14.0 , < 17.14.30 (custom)
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Microsoft Microsoft Visual Studio 2026 version 18.4 Affected: 18.4.0 , < 18.4.4 (custom)
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Red Hat Red Hat Enterprise Linux AppStream EUS (v. 10.0)     cpe:/o:redhat:enterprise_linux_eus:10.0
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Red Hat Red Hat Enterprise Linux AppStream (v. 10)     cpe:/o:redhat:enterprise_linux:10.1
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Red Hat Red Hat Enterprise Linux AppStream (v. 8)     cpe:/a:redhat:enterprise_linux:8::appstream
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Red Hat Red Hat Enterprise Linux AppStream EUS (v.9.4)     cpe:/a:redhat:rhel_eus:9.4::appstream
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Red Hat Red Hat Enterprise Linux AppStream EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::appstream
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Red Hat Red Hat Enterprise Linux AppStream (v. 9)     cpe:/a:redhat:enterprise_linux:9::appstream
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Red Hat Red Hat Enterprise Linux CodeReady Linux Builder EUS (v. 10.0)     cpe:/o:redhat:enterprise_linux_eus:10.0
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Red Hat Red Hat Enterprise Linux CodeReady Linux Builder (v. 10)     cpe:/o:redhat:enterprise_linux:10.1
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Red Hat Red Hat Enterprise Linux CRB (v. 8)     cpe:/a:redhat:enterprise_linux:8::crb
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Red Hat Red Hat CodeReady Linux Builder EUS (v.9.4)     cpe:/a:redhat:rhel_eus:9.4::crb
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Red Hat Red Hat CodeReady Linux Builder EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::crb
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Red Hat Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)     cpe:/a:redhat:enterprise_linux:9::crb
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Red Hat Red Hat Hardened Images     cpe:/a:redhat:hummingbird:1
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Date Public
2026-04-14 14:00
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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.