High severity7.5NVD Advisory· Published Nov 4, 2026· Updated Nov 4, 2026
CVE-2026-121957
CVE-2026-121957
Description
FreeRDP before 3.32.2 contains a use-after-free vulnerability that allows malicious RDP servers to corrupt client memory by racing the RDPGFX ResetGraphics handler against the planar bitmap decoder. Attackers can send ResetGraphics while concurrently sending compressed bitmaps of 32 bpp or more to trigger heap use-after-free or out-of-bounds read/write on shared planar buffers.
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Affected products
1Patches
Vulnerability mechanics
References
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