FreeRDP SDL2 Heap UAF until v3.23.0 (incomplete fix in SDL3)
CVE-2026-27950 Published on February 25, 2026
FreeRDP heap-use-after-free in update_pointer_new(SDL): Fix Applied in the Wrong File
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.23.0, the fix for the heap-use-after-free described in CVE-2026-24680 is incomplete. While the vulnerable execution flow referenced in the advisory exists in the SDL2 implementation, the fix appears to have been applied only to the SDL3 code path. In the SDL2 implementation, the pointer is not nulled after free. This creates a situation where the advisory suggests the vulnerability is fully resolved, while builds or environments still using SDL2 may retain the vulnerable logic. A complete fix is available in version 3.23.0.
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-2026-27950 has been classified to as a Dangling pointer vulnerability or weakness.
Products Associated with CVE-2026-27950
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Affected Versions
FreeRDP Version < 3.23.0 is affected by CVE-2026-27950Exploit 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.