CVE-2026-66401

Summary

FreeRDP before 3.29.0 contains an out-of-bounds heap read vulnerability in the UVC H.264 extension-unit parser that fails to validate descriptor length before accessing the GUID field. A local attacker with a malicious USB video camera can trigger a heap read beyond allocated bounds during camera stream setup, causing denial of service.

Affected Software

Weaknesses

• CWE-125: Out-of-bounds Read

References

• https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-8jj2-67pg-j6mg
• https://github.com/FreeRDP/FreeRDP/commit/5044d5390035c6fd9a36ad885192d97d21e8a92d
• https://www.vulncheck.com/advisories/freerdp-before-out-of-bounds-read-via-uvc-h-264

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