xrdp is an open source RDP server. Versions 0.10.6 and prior contain a missing bounds check in xrdp, which allows a heap-based buffer overflow when operating in vnc-any mode. The issue occurs during the handling of RFB protocol color map messages from a VNC server, where incoming color indices are not properly validated. A malicious VNC server can exploit this flaw by sending crafted messages with out-of-range values, leading to an out-of-bounds write on the heap. This memory corruption can result in a denial of service (DoS) or potentially allow remote code execution (RCE) prior to authentication. This issue has been fixed in version 0.10.6.1.
Fix
Patch, vendor advisory and mitigation references on NVD 1
- https://github.com/neutrinolabs/xrdp/security/advisories/GHSA-w5vg-6qmv-j63j Mitigation, Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 9.8 · neutrinolabsNVD modified 2026-10-24 20:10
Affected (CPE criteria) 1
cpe:2.3:a:neutrinolabs:xrdp:*:*:*:*:*:*:*:*
References 2
- https://github.com/neutrinolabs/xrdp/releases/tag/v0.10.6.1 Release Notes
- https://github.com/neutrinolabs/xrdp/security/advisories/GHSA-w5vg-6qmv-j63j Mitigation, Vendor Advisory