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 trigger a heap read beyond allocated bounds during camera stream setup, causing denial of service.

CVSS v3 2.1 LOW

2.1^/10

CVSS v3 : LOW

Vector :

Exploitability : 0.7 / Impact : 1.4

Attack Vector PHYSICAL

Attack Complexity LOW

Privileges Required NONE

User Interaction REQUIRED

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact LOW

Scope UNCHANGED

References

Link	Resource
https://github.com/FreeRDP/FreeRDP/commit/5044d5390035c6fd9a36ad885192d97d21e8a92d	Patch
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-8jj2-67pg-j6mg	Exploit Patch Vendor Advisory
https://www.vulncheck.com/advisories/freerdp-before-out-of-bounds-read-via-uvc-h-264	Patch Third Party Advisory
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-8jj2-67pg-j6mg	Exploit Patch Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-08-01 13:16

Updated : 2026-09-03 19:45

NVD link : CVE-2026-66401

Mitre link : CVE-2026-66401

CVE.ORG link : CVE-2026-66401

JSON object : View

Products Affected

freerdp

freerdp

CWE

CWE-125

Out-of-bounds Read

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