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.
Published: 2026-08-01
Score: 2.4 Low
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

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Remediation

No vendor fix or workaround currently provided.

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Tracking

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Advisories

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History

Mon, 03 Aug 2026 18:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Mon, 03 Aug 2026 12:15:00 +0000

Type Values Removed Values Added
References
Metrics threat_severity

None

threat_severity

Low


Sat, 01 Aug 2026 12:45:00 +0000

Type Values Removed Values Added
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.
Title FreeRDP before 3.29.0 Out-of-Bounds Read via UVC H.264
First Time appeared Freerdp
Freerdp freerdp
Weaknesses CWE-125
CPEs cpe:2.3:a:freerdp:freerdp:*:*:*:*:*:*:*:*
Vendors & Products Freerdp
Freerdp freerdp
References
Metrics cvssV3_1

{'score': 2.1, 'vector': 'CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L'}

cvssV4_0

{'score': 2.4, 'vector': 'CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: VulnCheck

Published:

Updated: 2026-08-03T17:42:01.381Z

Reserved: 2026-07-26T12:22:34.139Z

Link: CVE-2026-66401

cve-icon Vulnrichment

Updated: 2026-08-03T17:40:51.613Z

cve-icon NVD

No data.

cve-icon Redhat

Severity : Low

Publid Date: 2026-08-01T12:22:18Z

Links: CVE-2026-66401 - Bugzilla

cve-icon OpenCVE Enrichment

Updated: 2026-08-02T03:15:03Z

Weaknesses