CVE-2026-109946CWE-617

CVE-2026-109946

Medium · published October 13, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
19.9
In the wild
Unconfirmed
What it is

FreeRDP 3.11.0 before 3.32.0 does not validate that AVC444 and AVC444v2 region widths are even before YUV444 conversion, so an odd width reaches an assertion and aborts the client. A malicious or compromised RDP server can terminate a connected FreeRDP client after RDPGFX AVC444 negotiation by sending an in-bounds region rectangle with an odd width.

The record
Technical detail
CVSS v3.1
6.5 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
CVSS v4.0
7.1 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
EPSS
0.00285 · 19.9th percentile
Weakness
CWE-617 · Reachable Assertion
Published
2026-10-13T18:17Z
Affected products (1)
ProductVersionsFixed in
freerdp/freerdp≥ 3.11.0, < 3.32.03.32.0
References (3)
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-97pf-pwp3-2wrv · [email protected]https://www.vulncheck.com/advisories/freerdp-3.11.0-before-3.32.0-reachable-assertion-via-avc444-odd-region-width · [email protected]https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-97pf-pwp3-2wrv · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 15 OCT 03:28Z
    EPSS moved — → 0%
    epss
  • 13 OCT 13:27Z
    FreeRDP 3.11.0 before 3.32.0 Reachable Assertion via AVC444 Odd Region Width
    cvelistv5
  • 13 OCT 13:27Z
    FreeRDP 3.11.0 before 3.32.0 Reachable Assertion via AVC444 Odd Region Width
    cvelistv5