Medium 5.3Published Mar 13, 2026

CVE-2026-29775FreeRDP has a heap-buffer-overflow in bitmap_cache_put via OOB cacheId

Updated under an hour ago (Oct 27, 2026, 10:50 PM ET)

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No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

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: 5.3 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
Weakness (CWE): CWE-787
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: GitHub_M
NVD analysis: Analyzed
Record last updated: Mar 16, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

FreeRDP FreeRDP freerdp:freerdp (from the name)	before 3.24.0	CNA record
freerdp freerdp freerdp:freerdp	before 3.24.0	NVD

References

References

https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-h666-rfw3-jhvj	x-refsource-confirm, exploit, patch, vendor-advisory
https://github.com/FreeRDP/FreeRDP/commit/ffad58fd2b329efd81a3239e9d7e3c927b8e503f	x-refsource-misc, patch

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.