CVE-2026-25955CWE-416

FreeRDP has heap-use-after-free in xf_AppUpdateWindowFromSurface (stale XImage)

Medium · published February 25, 2026

CVSS v4.0
5.5
EPSS
1%
Percentile
56.4
In the wild
Unconfirmed
What it is

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, `xf_AppUpdateWindowFromSurface` reuses a cached `XImage` whose `data` pointer references a freed RDPGFX surface buffer, because `gdi_DeleteSurface` frees `surface->data` without invalidating the `appWindow->image` that aliases it. Version 3.23.0 fixes the issue.

The record
Technical detail
CVSS v4.0
5.5 · MEDIUM
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P
EPSS
0.00809 · 56.4th percentile
Weakness
CWE-416 · Use After Free
Published
2026-02-25T20:32Z
EPSS history
Timeline
  • 25 FEB 20:32Z
    FreeRDP has heap-use-after-free in xf_AppUpdateWindowFromSurface (stale XImage)
    cvelistv5