CVE-2026-91952CWE-835

CVE-2026-91952

Medium · published September 15, 2026

CVSS v3.1
6.5
EPSS
0%
Percentile
32.2
In the wild
Unconfirmed
What it is

FreeRDP versions before 3.31.0 contain an infinite-loop denial of service in the pool_decode_rect function when decoding AVC444 metablocks with more region rectangles than preallocated worker array size. A malicious RDP server can send crafted AVC444 graphics updates causing the threaded decode path to loop indefinitely, consuming CPU and preventing normal client operation.

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
0.00392 · 32.2th percentile
Weakness
CWE-835 · Loop with Unreachable Exit Condition ('Infinite Loop')
Published
2026-09-15T20:17Z
Affected products (1)
ProductVersionsFixed in
freerdp/freerdp> 3.11.0, < 3.31.03.31.0
References (3)
https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-m85m-3qxv-63h5 · [email protected]https://www.vulncheck.com/advisories/freerdp-before-3.31.0-denial-of-service-via-pool-decode-rect · [email protected]https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-m85m-3qxv-63h5 · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 17 SEP 03:33Z
    EPSS moved — → 0%
    epss
  • 15 SEP 15:18Z
    FreeRDP before 3.31.0 Denial of Service via pool_decode_rect
    cvelistv5