CVE-2026-66401CWE-125

CVE-2026-66401

Low · published August 1, 2026

CVSS v3.1

2.1

EPSS

Percentile

9.4

In the wild

Unconfirmed

What it is

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.

The record

Technical detail

CVSS v3.1: 2.1 · LOW
Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L
CVSS v4.0: Not supplied
EPSS: 0.00201 · 9.4th percentile
Weakness: CWE-125 · Out-of-bounds Read
Published: 2026-08-01T17:16Z

Affected products (1)

Product	Versions	Fixed in
freerdp/freerdp	< 3.29.0	3.29.0

References (4)

https://github.com/FreeRDP/FreeRDP/commit/5044d5390035c6fd9a36ad885192d97d21e8a92d · [email protected]https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-8jj2-67pg-j6mg · [email protected]https://www.vulncheck.com/advisories/freerdp-before-out-of-bounds-read-via-uvc-h-264 · [email protected]https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-8jj2-67pg-j6mg · 134c704f-9b21-4f2e-91b3-4a467353bcc0

EPSS history

Timeline

01 AUG 12:22Z
FreeRDP before 3.29.0 Out-of-Bounds Read via UVC H.264
cvelistv5