CVE-2026-55827
HIGH SEVERITYCVSS Score & Metrics
Base Score
7.5 / 10
Vector String
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
Vulnerability Description
FreeRDP is a free implementation of the Remote Desktop Protocol. Prior to 3.27.1, FreeRDP clients launched with the non-default /cache:codec:rfx option pass desktop stride and height to RemoteFX decoding for Cache Bitmap V3 data while allocating bitmap->data only for the smaller DstWidth and DstHeight in gdi_Bitmap_Decompress, allowing a malicious RDP server to trigger a heap out-of-bounds write with attacker-controlled offset and content. This issue is fixed in version 3.27.1.
Vulnerability Details
Published Date
Last Modified
CWE ID
CWE-131
Source
NVD
Vendor
FreeRDP
Product
FreeRDP
External References
- https://github.com/FreeRDP/FreeRDP/commit/e58adf922ea4c0d5495e59a1fe488d70092e0e3e
- https://github.com/FreeRDP/FreeRDP/pull/12899
- https://github.com/FreeRDP/FreeRDP/releases/tag/3.27.1
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-c495-h83v-3prp
- https://github.com/FreeRDP/FreeRDP/security/advisories/GHSA-c495-h83v-3prp
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