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  4. CVE 2026 121954 freerdp before 3322 heap out of bounds write in
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Back to active CVEs
High · CVSS 7.1CVE-2026-121954

FreeRDP before 3.32.2 Heap Out-of-Bounds Write in Planar CodecCVE-2026-121954

Answer in brief

CVE-2026-121954 records a High severity (CVSS 7.1) vulnerability in FreeRDP before 3.32.2 Heap Out-of-Bounds Write in Planar Codec. The current sources do not mark it as known exploited. The current feed maps FreeRDP/FreeRDP (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Nov 4, 2026Updated Nov 4, 2026Source checked Nov 4, 2026First seen by HOL Nov 4, 2026Material review Nov 4, 2026
Upstream Advisory

Key facts

Risk
High · CVSS 7.1
Exploitation
Not marked as known exploited
Affected software
1 mapped package or product
Fix availability
Available

Why this deserves its current priority

CVSS is 7.1. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps FreeRDP/FreeRDP (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
PackageAffected rangeFixed version
FreeRDP/FreeRDPgeneric>=0 <3.32.23.32.2

Recommended response

  1. 1Check inventory. Check lockfiles and deployed manifests for FreeRDP/FreeRDP.
  2. 2Review the reported fix. Update FreeRDP/FreeRDP to 3.32.2 if you use the affected versions. Test the change in a non-production environment first.

Evidence timeline and material changes

  1. Published upstream

    Nov 4, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  2. Source modified

    Nov 4, 2026

    Evidence: source:cvelist:source_dates:source-dates:record

  3. First seen by HOL

    Nov 4, 2026

Sources and claim methodology

  • GitHub security advisorygithub.com
  • Source referencevulncheck.com
Upstream source description

FreeRDP before 3.32.2 has a heap out-of-bounds write in the planar codec because freerdp_bitmap_planar_context_reset commits new dimensions before buffer reallocation succeeds, and a failed ResetGraphics is only logged. A malicious RDP server can send an oversized ResetGraphics PDU, then a GFX PLANAR command, to corrupt client heap memory and crash the client.

Quoted source text, attributed separately from HOL analysis.

Related CVEs

  • FreeRDP before 3.32.2 Heap Overflow via RDPGFX CREATE_SURFACE Integer WrapSame freerdp/freerdp package
  • FreeRDP 3.0.0 before 3.32.2 Denial of Service via Slow-Path Input EventSame freerdp/freerdp package
  • FreeRDP before 3.32.2 Proxy Out-of-Bounds Write via Bitmap Cache v2 CapabilitySame freerdp/freerdp package
  • FreeRDP before 3.32.2 Use-After-Free via rdpgfx Dynamic Virtual Channel CloseSame freerdp/freerdp package
  • FreeRDP before 3.32.2 Use-After-Free in Smartcard Emulation ReleaseContextSame freerdp/freerdp package
  • FreeRDP before 3.32.2 Double Free in WinPR Kerberos retrieveSomeTgtSame freerdp/freerdp package

Record context

Vulnerability class
Memory Corruption
EPSS
Not reported
CWE IDs
CWE-787
Source
CVE List V5
Source checked
Nov 4, 2026
References
2 linked sources
Open source record