CVE-2026-29775

Description

FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.24.0, a client-side heap out-of-bounds read/write occurs in FreeRDP's bitmap cache subsystem due to an off-by-one boundary check in bitmap_cache_put. A malicious server can send a CACHE_BITMAP_ORDER (Rev1) with cacheId equal to maxCells, bypassing the guard and accessing cells[] one element past the allocated array. This vulnerability is fixed in 3.24.0.

PUBLISHED Reserved 2026-03-04 | Published 2026-03-13 | Updated 2026-03-13 | Assigner GitHub_M

Problem types

CWE-787: Out-of-bounds Write

Product status

References

github.com/...reeRDP/security/advisories/GHSA-h666-rfw3-jhvj

github.com/...ommit/ffad58fd2b329efd81a3239e9d7e3c927b8e503f

cve.org (CVE-2026-29775)

nvd.nist.gov (CVE-2026-29775)

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