CVE-2026-109946: freerdp freerdp

CVSS 7.1 (high) · published 2026-10-13

FreeRDP 3.11.0 before 3.32.0 does not validate that AVC444 and AVC444v2 region widths are even before YUV444 conversion, so an odd width reaches an assertion and aborts the client. A malicious or compromised RDP server can terminate a connected FreeRDP client after RDPGFX AVC444 negotiation by sending an in-bounds region rectangle with an odd width.

Affected products (NVD): freerdp freerdp

Fixed in (NVD): 3.32.0

Weakness: CWE-617

Source: NVD CVE-2026-109946

References

• https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-97pf-pwp3-2wrv
• https://www.vulncheck.com/advisories/freerdp-3.11.0-before-3.32.0-reachable-assertion-via-avc444-odd-region-width
• https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-97pf-pwp3-2wrv

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