FreeRDP <3.23.0 UAF via RDPGFX DVC thread, CVE-2026-25953
CVE-2026-25953 Published on February 25, 2026
FreeRDP has heap-use-after-free in xf_AppUpdateWindowFromSurface (freed appWindow)
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, `xf_AppUpdateWindowFromSurface` reads from a freed `xfAppWindow` because the RDPGFX DVC thread obtains a bare pointer via `xf_rail_get_window` without any lifetime protection, while the main thread can concurrently delete the window through a fastpath window-delete order. Version 3.23.0 fixes the issue.
Weakness Type
What is a Dangling pointer Vulnerability?
Referencing memory after it has been freed can cause a program to crash, use unexpected values, or execute code.
CVE-2026-25953 has been classified to as a Dangling pointer vulnerability or weakness.
Products Associated with CVE-2026-25953
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Affected Versions
FreeRDP Version < 3.23.0 is affected by CVE-2026-25953Exploit Probability
EPSS (Exploit Prediction Scoring System) scores estimate the probability that a vulnerability will be exploited in the wild within the next 30 days. The percentile shows you how this score compares to all other vulnerabilities.