Common Weakness Enumeration

CWE-122

Heap-based Buffer Overflow

A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc().

CVE-2026-22164 (GCVE-0-2026-22164)

Vulnerability from cvelistv5 – Published: 2026-06-08 14:53 – Updated: 2026-06-08 18:19
VLAI
Title
GPU DDK - Kernel heap OOB write in DevmemIntComputeVirtualIndicesFromLogical
Summary
Software installed and run as a non-privileged user may conduct improper GPU system calls to corrupt kernel heap memory. By creating resources of certain types and presenting a set of parameters to the affected interface the exploit can be used to corrupt kernel memory.
Severity
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-122 - Heap-based Buffer Overflow (4.16)
Assigner
References
Impacted products
Vendor Product Version
Imagination Technologies Graphics DDK Unaffected: 1.18 RTM (custom)
Unaffected: 23.2 RTM (custom)
Affected: 24.2 RTM (custom)
Affected: 25.1 RTM , ≤ 25.3 RTM (custom)
Affected: 26.1 RTM (custom)
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CVE-2026-22554 (GCVE-0-2026-22554)

Vulnerability from cvelistv5 – Published: 2026-05-20 13:58 – Updated: 2026-05-21 16:53
VLAI
Summary
MediaArea MediaInfoLib Channel Splitting heap-based buffer overflow vulnerability
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
Credits
Discovered by Dimitrios Tatsis of Cisco TALOS
Show details on NVD website
To clipboard 

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CVE-2026-22697 (GCVE-0-2026-22697)

Vulnerability from cvelistv5 – Published: 2026-01-10 00:31 – Updated: 2026-01-13 21:48
VLAI
Title
CryptoLib Has Heap Buffer Overflow Vulnerability in KMC Base64 Decode Handling (KMC JSON base64ciphertext/base64cleartext)
Summary
CryptoLib provides a software-only solution using the CCSDS Space Data Link Security Protocol - Extended Procedures (SDLS-EP) to secure communications between a spacecraft running the core Flight System (cFS) and a ground station. Prior to version 1.4.3, CryptoLib’s KMC crypto service integration is vulnerable to a heap buffer overflow when decoding Base64-encoded ciphertext/cleartext fields returned by the KMC service. The decode destination buffer is sized using an expected output length (len_data_out), but the Base64 decoder writes output based on the actual Base64 input length and does not enforce any destination size limit. An oversized Base64 string in the KMC JSON response can cause out-of-bounds writes on the heap, resulting in process crash and potentially code execution under certain conditions. This issue has been patched in version 1.4.3.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
nasa CryptoLib Affected: < 1.4.3
Create a notification for this product.
Show details on NVD website
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CVE-2026-22828 (GCVE-0-2026-22828)

Vulnerability from cvelistv5 – Published: 2026-04-14 15:38 – Updated: 2026-04-15 03:58
VLAI
Summary
A heap-based buffer overflow vulnerability in Fortinet FortiAnalyzer Cloud 7.6.2 through 7.6.4, FortiManager Cloud 7.6.2 through 7.6.4 may allow a remote unauthenticated attacker to execute arbitrary code or commands via specifically crafted requests. Successful exploitation would require a large amount of effort in preparation because of ASLR and network segmentation
Severity
7.3 (High)
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-122 - Escalation of privilege
Assigner
References
Impacted products
Vendor Product Version
Fortinet FortiAnalyzer Cloud Affected: 7.6.2 , ≤ 7.6.4 (semver)
    cpe:2.3:a:fortinet:fortianalyzercloud:7.6.4:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortianalyzercloud:7.6.3:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortianalyzercloud:7.6.2:*:*:*:*:*:*:*
 Create a notification for this product.
Fortinet FortiManager Cloud Affected: 7.6.2 , ≤ 7.6.4 (semver)
    cpe:2.3:a:fortinet:fortimanagercloud:7.6.4:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortimanagercloud:7.6.3:*:*:*:*:*:*:*
    cpe:2.3:a:fortinet:fortimanagercloud:7.6.2:*:*:*:*:*:*:*
 Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-22854 (GCVE-0-2026-22854)

Vulnerability from cvelistv5 – Published: 2026-01-14 17:47 – Updated: 2026-02-26 15:04
VLAI
Title
FreeRDP has a heap-buffer-overflow in drive_process_irp_read
Summary
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.20.1, a heap-buffer-overflow occurs in drive read when a server-controlled read length is used to read file data into an IRP output stream buffer without a hard upper bound, allowing an oversized read to overwrite heap memory. This vulnerability is fixed in 3.20.1.
Severity
6.8 (Medium)
CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
SSVC
Exploitation: none Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
FreeRDP FreeRDP Affected: < 3.20.1
Create a notification for this product.
Show details on NVD website
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{
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CVE-2026-22891 (GCVE-0-2026-22891)

Vulnerability from cvelistv5 – Published: 2026-03-03 14:32 – Updated: 2026-03-03 15:17
VLAI
Summary
A heap-based buffer overflow vulnerability exists in the Intan CLP parsing functionality of The Biosig Project libbiosig 3.9.2 and Master Branch (db9a9a63). A specially crafted Intan CLP file can lead to arbitrary code execution. An attacker can provide a malicious file to trigger this vulnerability.
Severity
9.8 (Critical)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
SSVC
Exploitation: none Automatable: yes Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-122 - Heap-based Buffer Overflow
Assigner
References
Impacted products
Vendor Product Version
The Biosig Project libbiosig Affected: 3.9.2
Affected: Master Branch (db9a9a63)
Create a notification for this product.
Credits
Discovered by Mark Bereza and Lilith &gt;_&gt; of Cisco Talos.
Show details on NVD website
To clipboard 

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CVE-2026-23530 (GCVE-0-2026-23530)

Vulnerability from cvelistv5 – Published: 2026-01-19 16:58 – Updated: 2026-06-30 12:06
VLAI
Title
FreeRDP has heap-buffer-overflow in planar_decompress_plane_rle
Summary
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.21.0,`freerdp_bitmap_decompress_planar` does not validate `nSrcWidth`/`nSrcHeight` against `planar->maxWidth`/`maxHeight` before RLE decode. A malicious server can trigger a client‑side heap buffer overflow, causing a crash (DoS) and potential heap corruption with code‑execution risk depending on allocator behavior and surrounding heap layout. Version 3.21.0 contains a patch for the issue.
Severity
7.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P
7.6 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-122 - Heap-based Buffer Overflow
Assigner
References
URL Tags
https://github.com/FreeRDP/FreeRDP/security/advis… x_refsource_CONFIRM
https://github.com/FreeRDP/FreeRDP/blob/38514dfa5… x_refsource_MISC
https://github.com/FreeRDP/FreeRDP/blob/38514dfa5… x_refsource_MISC
https://github.com/FreeRDP/FreeRDP/blob/38514dfa5… x_refsource_MISC
https://github.com/FreeRDP/FreeRDP/releases/tag/3.21.0 x_refsource_MISC
https://access.redhat.com/security/cve/CVE-2026-23530 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2430877 issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v… x_sadp-csaf-vex
https://access.redhat.com/errata/RHSA-2026:2714 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:2952 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:2222 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:2081 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:3039 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:3038 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:3036 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:3041 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:2770 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:2824 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:2736 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:3037 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:2048 vendor-advisoryx_refsource_REDHAT
Impacted products
Vendor Product Version
FreeRDP FreeRDP Affected: < 3.21.0
Create a notification for this product.
Red Hat Red Hat Enterprise Linux Server (v. 7 ELS)     cpe:/o:redhat:rhel_els:7
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux Server Optional (v. 7 ELS)     cpe:/o:redhat:rhel_els:7
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux AppStream EUS (v. 10.0)     cpe:/o:redhat:enterprise_linux_eus:10.0
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux AppStream (v. 10)     cpe:/o:redhat:enterprise_linux:10.1
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux AppStream (v. 8)     cpe:/a:redhat:enterprise_linux:8::appstream
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux AppStream AUS (v. 8.2)     cpe:/a:redhat:rhel_aus:8.2::appstream
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux AppStream AUS (v.8.4)     cpe:/a:redhat:rhel_aus:8.4::appstream
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)     cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux AppStream AUS (v.8.6)     cpe:/a:redhat:rhel_aus:8.6::appstream
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux AppStream E4S (v.8.6)     cpe:/a:redhat:rhel_e4s:8.6::appstream
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Red Hat Red Hat Enterprise Linux AppStream TUS (v.8.6)     cpe:/a:redhat:rhel_tus:8.6::appstream
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux AppStream E4S (v.8.8)     cpe:/a:redhat:rhel_e4s:8.8::appstream
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux AppStream TUS (v.8.8)     cpe:/a:redhat:rhel_tus:8.8::appstream
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.0)     cpe:/a:redhat:rhel_e4s:9.0::appstream
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Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.2)     cpe:/a:redhat:rhel_e4s:9.2::appstream
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Red Hat Red Hat Enterprise Linux AppStream EUS (v.9.4)     cpe:/a:redhat:rhel_eus:9.4::appstream
 Create a notification for this product.
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
 Create a notification for this product.
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
 Create a notification for this product.
Red Hat Red Hat CodeReady Linux Builder EUS (v.9.6)     cpe:/a:redhat:rhel_eus:9.6::crb
 Create a notification for this product.
Red Hat Red Hat Enterprise Linux CodeReady Linux Builder (v. 9)     cpe:/a:redhat:enterprise_linux:9::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.
Show details on NVD website
To clipboard 

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        "metrics": [
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CVE-2026-23531 (GCVE-0-2026-23531)

Vulnerability from cvelistv5 – Published: 2026-01-19 17:01 – Updated: 2026-06-30 12:06
VLAI
Title
FreeRDP has heap-buffer-overflow in clear_decompress
Summary
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.21.0, in ClearCodec, when `glyphData` is present, `clear_decompress` calls `freerdp_image_copy_no_overlap` without validating the destination rectangle, allowing an out-of-bounds read/write via crafted RDPGFX surface updates. A malicious server can trigger a client‑side heap buffer overflow, causing a crash (DoS) and potential heap corruption with code‑execution risk depending on allocator behavior and surrounding heap layout. Version 3.21.0 contains a patch for the issue.
Severity
7.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P
7.6 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-122 - Heap-based Buffer Overflow
Assigner
References
URL Tags
https://github.com/FreeRDP/FreeRDP/security/advis… x_refsource_CONFIRM
https://github.com/FreeRDP/FreeRDP/blob/38514dfa5… x_refsource_MISC
https://github.com/FreeRDP/FreeRDP/releases/tag/3.21.0 x_refsource_MISC
https://access.redhat.com/security/cve/CVE-2026-23531 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2430887 issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v… x_sadp-csaf-vex
https://access.redhat.com/errata/RHSA-2026:2714 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:2952 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:2222 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:2081 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:3039 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:3038 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:3036 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:3041 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:2770 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:2824 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:2736 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:3037 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:2048 vendor-advisoryx_refsource_REDHAT
Impacted products
Vendor Product Version
FreeRDP FreeRDP Affected: < 3.21.0
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Red Hat Red Hat Enterprise Linux Server (v. 7 ELS)     cpe:/o:redhat:rhel_els:7
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Red Hat Red Hat Enterprise Linux Server Optional (v. 7 ELS)     cpe:/o:redhat:rhel_els:7
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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 AUS (v. 8.2)     cpe:/a:redhat:rhel_aus:8.2::appstream
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Red Hat Red Hat Enterprise Linux AppStream AUS (v.8.4)     cpe:/a:redhat:rhel_aus:8.4::appstream
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Red Hat Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)     cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
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Red Hat Red Hat Enterprise Linux AppStream AUS (v.8.6)     cpe:/a:redhat:rhel_aus:8.6::appstream
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Red Hat Red Hat Enterprise Linux AppStream E4S (v.8.6)     cpe:/a:redhat:rhel_e4s:8.6::appstream
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Red Hat Red Hat Enterprise Linux AppStream TUS (v.8.6)     cpe:/a:redhat:rhel_tus:8.6::appstream
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Red Hat Red Hat Enterprise Linux AppStream E4S (v.8.8)     cpe:/a:redhat:rhel_e4s:8.8::appstream
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Red Hat Red Hat Enterprise Linux AppStream TUS (v.8.8)     cpe:/a:redhat:rhel_tus:8.8::appstream
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Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.0)     cpe:/a:redhat:rhel_e4s:9.0::appstream
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Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.2)     cpe:/a:redhat:rhel_e4s:9.2::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 Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
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CVE-2026-23532 (GCVE-0-2026-23532)

Vulnerability from cvelistv5 – Published: 2026-01-19 17:03 – Updated: 2026-06-30 12:06
VLAI
Title
FreeRDP has heap-buffer-overflow in gdi_SurfaceToSurface
Summary
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.21.0, a client-side heap buffer overflow occurs in the FreeRDP client’s `gdi_SurfaceToSurface` path due to a mismatch between destination rectangle clamping and the actual copy size. A malicious server can trigger a client‑side heap buffer overflow, causing a crash (DoS) and potential heap corruption with code‑execution risk depending on allocator behavior and surrounding heap layout. Version 3.21.0 contains a patch for the issue.
Severity
7.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P
7.6 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-122 - Heap-based Buffer Overflow
Assigner
References
URL Tags
https://github.com/FreeRDP/FreeRDP/security/advis… x_refsource_CONFIRM
https://github.com/FreeRDP/FreeRDP/blob/38514dfa5… x_refsource_MISC
https://github.com/FreeRDP/FreeRDP/releases/tag/3.21.0 x_refsource_MISC
https://access.redhat.com/security/cve/CVE-2026-23532 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2430891 issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v… x_sadp-csaf-vex
https://access.redhat.com/errata/RHSA-2026:2714 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:2952 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:2222 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:2081 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:3039 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:3038 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:3036 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:3041 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:2770 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:2824 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:2736 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:3037 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:2048 vendor-advisoryx_refsource_REDHAT
Impacted products
Vendor Product Version
FreeRDP FreeRDP Affected: < 3.21.0
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Red Hat Red Hat Enterprise Linux Server (v. 7 ELS)     cpe:/o:redhat:rhel_els:7
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Red Hat Red Hat Enterprise Linux Server Optional (v. 7 ELS)     cpe:/o:redhat:rhel_els:7
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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 AUS (v. 8.2)     cpe:/a:redhat:rhel_aus:8.2::appstream
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Red Hat Red Hat Enterprise Linux AppStream AUS (v.8.4)     cpe:/a:redhat:rhel_aus:8.4::appstream
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Red Hat Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)     cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
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Red Hat Red Hat Enterprise Linux AppStream AUS (v.8.6)     cpe:/a:redhat:rhel_aus:8.6::appstream
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Red Hat Red Hat Enterprise Linux AppStream E4S (v.8.6)     cpe:/a:redhat:rhel_e4s:8.6::appstream
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Red Hat Red Hat Enterprise Linux AppStream TUS (v.8.6)     cpe:/a:redhat:rhel_tus:8.6::appstream
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Red Hat Red Hat Enterprise Linux AppStream E4S (v.8.8)     cpe:/a:redhat:rhel_e4s:8.8::appstream
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Red Hat Red Hat Enterprise Linux AppStream TUS (v.8.8)     cpe:/a:redhat:rhel_tus:8.8::appstream
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Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.0)     cpe:/a:redhat:rhel_e4s:9.0::appstream
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Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.2)     cpe:/a:redhat:rhel_e4s:9.2::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 Enterprise Linux 6     cpe:/o:redhat:enterprise_linux:6
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    "cveId": "CVE-2026-23532",
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    "dateReserved": "2026-01-13T18:22:43.981Z",
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}

CVE-2026-23533 (GCVE-0-2026-23533)

Vulnerability from cvelistv5 – Published: 2026-01-19 17:07 – Updated: 2026-06-30 12:06
VLAI
Title
FreeRDP has heap-buffer-overflow in clear_decompress_residual_data
Summary
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.21.0, a client-side heap buffer overflow occurs in the RDPGFX ClearCodec decode path when maliciously crafted residual data causes out-of-bounds writes during color output. A malicious server can trigger a client‑side heap buffer overflow, causing a crash (DoS) and potential heap corruption with code‑execution risk depending on allocator behavior and surrounding heap layout. Version 3.21.0 contains a patch for the issue.
Severity
7.7 (High)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:P
7.6 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-122 - Heap-based Buffer Overflow
Assigner
References
URL Tags
https://github.com/FreeRDP/FreeRDP/security/advis… x_refsource_CONFIRM
https://github.com/FreeRDP/FreeRDP/blob/38514dfa5… x_refsource_MISC
https://github.com/FreeRDP/FreeRDP/blob/38514dfa5… x_refsource_MISC
https://github.com/FreeRDP/FreeRDP/releases/tag/3.21.0 x_refsource_MISC
https://access.redhat.com/security/cve/CVE-2026-23533 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2430886 issue-trackingx_refsource_REDHAT
https://security.access.redhat.com/data/csaf/v2/v… x_sadp-csaf-vex
https://access.redhat.com/errata/RHSA-2026:2714 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:2952 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:2222 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:2081 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:3039 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:3038 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:3036 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:3041 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:2770 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:2824 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:2736 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:3037 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:2048 vendor-advisoryx_refsource_REDHAT
Impacted products
Vendor Product Version
FreeRDP FreeRDP Affected: < 3.21.0
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Red Hat Red Hat Enterprise Linux Server (v. 7 ELS)     cpe:/o:redhat:rhel_els:7
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Red Hat Red Hat Enterprise Linux Server Optional (v. 7 ELS)     cpe:/o:redhat:rhel_els:7
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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 AUS (v. 8.2)     cpe:/a:redhat:rhel_aus:8.2::appstream
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Red Hat Red Hat Enterprise Linux AppStream AUS (v.8.4)     cpe:/a:redhat:rhel_aus:8.4::appstream
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Red Hat Red Hat Enterprise Linux AppStream EUS EXTENSION (v.8.4)     cpe:/a:redhat:rhel_eus_long_life:8.4::appstream
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Red Hat Red Hat Enterprise Linux AppStream AUS (v.8.6)     cpe:/a:redhat:rhel_aus:8.6::appstream
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Red Hat Red Hat Enterprise Linux AppStream E4S (v.8.6)     cpe:/a:redhat:rhel_e4s:8.6::appstream
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Red Hat Red Hat Enterprise Linux AppStream TUS (v.8.6)     cpe:/a:redhat:rhel_tus:8.6::appstream
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Red Hat Red Hat Enterprise Linux AppStream E4S (v.8.8)     cpe:/a:redhat:rhel_e4s:8.8::appstream
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Red Hat Red Hat Enterprise Linux AppStream TUS (v.8.8)     cpe:/a:redhat:rhel_tus:8.8::appstream
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Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.0)     cpe:/a:redhat:rhel_e4s:9.0::appstream
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Red Hat Red Hat Enterprise Linux AppStream E4S (v.9.2)     cpe:/a:redhat:rhel_e4s:9.2::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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        "discovery": "UNKNOWN"
      },
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    "assignerShortName": "GitHub_M",
    "cveId": "CVE-2026-23533",
    "datePublished": "2026-01-19T17:07:18.283Z",
    "dateReserved": "2026-01-13T18:22:43.981Z",
    "dateUpdated": "2026-06-30T12:06:43.598Z",
    "state": "PUBLISHED"
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  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}
Mitigation

Phases:

Description:

  • Pre-design: Use a language or compiler that performs automatic bounds checking.
Mitigation

Phase: Architecture and Design

Description:

  • Use an abstraction library to abstract away risky APIs. Not a complete solution.
Mitigation ID: MIT-10

Phases: Operation, Build and Compilation

Strategy: Environment Hardening

Description:

  • 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 ID: MIT-11

Phases: Operation, Build and Compilation

Strategy: Environment Hardening

Description:

  • 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].
Mitigation

Phase: Implementation

Description:

  • Implement and perform bounds checking on input.
Mitigation

Phase: Implementation

Strategy: Libraries or Frameworks

Description:

  • Do not use dangerous functions such as gets. Look for their safe equivalent, which checks for the boundary.
Mitigation

Phase: Operation

Description:

  • Use OS-level preventative functionality. This is not a complete solution, but it provides some defense in depth.
CAPEC-92: Forced Integer Overflow

This attack forces an integer variable to go out of range. The integer variable is often used as an offset such as size of memory allocation or similarly. The attacker would typically control the value of such variable and try to get it out of range. For instance the integer in question is incremented past the maximum possible value, it may wrap to become a very small, or negative number, therefore providing a very incorrect value which can lead to unexpected behavior. At worst the attacker can execute arbitrary code.

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