Medium severity5.4NVD Advisory· Published Nov 10, 2026· Updated Nov 10, 2026
CVE-2026-125394
CVE-2026-125394
Description
FreeRDP before 3.33.0 contains a heap use-after-free vulnerability in update_gdi_patblt(), update_gdi_polygon_cb() and update_gdi_mem3blt() that retain stale brush cache pointers. A malicious RDP server can resend CACHE_BRUSH to the same slot then send PATBLT, causing clients to read freed heap memory, disclosing data or crashing.
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Affected products
1Patches
Vulnerability mechanics
References
5- github.com/FreeRDP/FreeRDP/blob/3.32.2/libfreerdp/cache/brush.cnvd
- github.com/FreeRDP/FreeRDP/commit/ffc6b976e3589b768e8e279bc61dfb7b5896e832nvd
- github.com/FreeRDP/FreeRDP/releases/tag/3.33.0nvd
- github.com/FreeRDP/FreeRDP/security/advisories/GHSA-fw6x-h8gw-778wnvd
- www.vulncheck.com/advisories/freerdp-before-3.33.0-use-after-free-via-stale-brush-cache-pointernvd
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