VYPR
Unrated severityOSV Advisory· Published Jan 19, 2026· Updated Jan 20, 2026

Heap-use-after-free in gdi_set_bounds

CVE-2026-23884

Description

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to version 3.21.0, offscreen bitmap deletion leaves gdi->drawing pointing to freed memory, causing UAF when related update packets arrive. A malicious server can trigger a client‑side use after free, causing a crash (DoS) and potential heap corruption with code‑execution risk depending on allocator behavior and surrounding heap layout. Version 3.21.0 contains a patch for the issue.

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Affected products

20

Patches

Vulnerability mechanics

References

4

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CVE-2026-23884 · VYPR