freerdp: FreeRDP has a heap-buffer-overflow in bitmap_cache_put via OOB cacheId

A heap based buffer overflow flaw has been discovered in FreeRDP. This client-side heap out-of-bounds read/write occurs in FreeRDP's bitmap cache subsystem due to an off-by-one boundary check in bitmapcacheput. A malicious server can send a CACHEBITMAPORDER Rev1 with cacheId equal to maxCells,...

CVE-2026-29775

A heap based buffer overflow flaw has been discovered in FreeRDP. This client-side heap out-of-bounds read/write occurs in FreeRDP's bitmap cache subsystem due to an off-by-one boundary check in bitmapcacheput. A malicious server can send a CACHEBITMAPORDER Rev1 with cacheId equal to maxCells,...

CVE-2026-29775

CVE-2026-29775 affects FreeRDP prior to version 3.24.0, where the bitmap cache subsystem is vulnerable to a heap-out-of-bounds condition in bitmap_cache_put. The root cause is an off-by-one boundary check that permits a malicious server to send a CACHE_BITMAP_ORDER (Rev1) with cacheId equal to ma...