CVE-2026-41252: Neutrinolabs Xrdp

Critical severity, CVSS 9.8. EPSS: 1.1% chance of exploitation in the next 30 days.

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.

Affected products

• Neutrinolabs Xrdp: before 0.10.6.1 (fixed in 0.10.6.1)

Published 2026-07-20. Last modified 2026-07-23.