Vulnerability Description
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.
CVSS Score
LOW
Related Weaknesses (CWE)
References
- https://github.com/FreeRDP/FreeRDP/commit/5044d5390035c6fd9a36ad885192d97d21e8a9
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-8jj2-67pg-j6mg
- https://www.vulncheck.com/advisories/freerdp-before-out-of-bounds-read-via-uvc-h
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-8jj2-67pg-j6mg
FAQ
What is CVE-2026-66401?
CVE-2026-66401 is a vulnerability with a CVSS score of 2.1 (LOW). 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 attacke...
How severe is CVE-2026-66401?
CVE-2026-66401 has been rated LOW with a CVSS base score of 2.1/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-66401?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.