CVE-2026-111382

HIGH 8.8

FreeRDP before 3.32.0 Heap Out-of-Bounds Write in AVC444 YUV444 Combine

CVSS Score

8.8

EPSS Score

0.0%

EPSS Percentile

0th

FreeRDP before 3.32.0 contains a client-side heap out-of-bounds write vulnerability in general_LumaToYUV444 and general_ChromaV2ToYUV444 that allows malicious RDP servers to corrupt client memory. Attackers can send RDPGFX AVC444 or AVC444v2 frames with odd-height region rects ending at surface height to write past U/V planes, enabling heap corruption and potential code execution.

CWE	CWE-787
Vendor	freerdp
Product	freerdp
Published	Oct 16, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

FreeRDP / FreeRDP

0 < 3.32.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-f4pf-pgp4-f2r3 vulncheck.com: https://www.vulncheck.com/advisories/freerdp-before-3.32.0-heap-out-of-bounds-write-in-avc444-yuv444-combine

Credits

🔍 manus-use