Vulnerability 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.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Freerdp | Freerdp | < 3.24.0 |
Related Weaknesses (CWE)
References
- https://github.com/FreeRDP/FreeRDP/commit/ffad58fd2b329efd81a3239e9d7e3c927b8e50Patch
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-h666-rfw3-jhvjExploitPatchVendor Advisory
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-h666-rfw3-jhvjExploitPatchVendor Advisory
FAQ
What is CVE-2026-29775?
CVE-2026-29775 is a vulnerability with a CVSS score of 5.3 (MEDIUM). 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 c...
How severe is CVE-2026-29775?
CVE-2026-29775 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-29775?
Check the references section above for vendor advisories and patch information. Affected products include: Freerdp Freerdp.