Out-of-bounds Read in Freerdp
CVE-2026-66401
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…
Vulnerability class: Buffer Overflow
CVSS v3 metric
CVSS v3 base score 2.1 (Low). Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L.
Affected products
- Freerdp — versions 0, 3.29.0
Weakness classification (CWE)
References
- disclosure@vulncheck.com (vendor-advisory)
- disclosure@vulncheck.com (patch)
- disclosure@vulncheck.com (third-party-advisory)
Frequently asked questions
- What is CVE-2026-66401?
- CVE-2026-66401 is a low-severity vulnerability in Freerdp, classified under Out-of-bounds Read. CVSS score: 2.1/10. Published 2026-08-01.
- How severe is CVE-2026-66401?
- Low severity. CVSS v3 base score is 2.1 out of 10.