CVE-2026-41252: CWE-122: Heap-based Buffer Overflow in neutrinolabs xrdp
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.
AI Analysis
Technical Summary
CVE-2026-41252 is a heap-based buffer overflow vulnerability in neutrinolabs xrdp (an open source RDP server) affecting versions up to and including 0.10.6. The issue arises from improper validation of color indices in RFB protocol color map messages when operating in vnc-any mode. A malicious VNC server can send crafted messages with out-of-range values, causing an out-of-bounds write on the heap. This memory corruption can lead to denial of service or potentially remote code execution prior to authentication. The vulnerability has been addressed in version 0.10.6.1.
Potential Impact
Successful exploitation can result in denial of service or remote code execution on the affected system without requiring authentication. The vulnerability allows a remote attacker controlling a VNC server to trigger heap corruption by sending maliciously crafted color map messages, potentially compromising the confidentiality, integrity, and availability of the system running xrdp.
Mitigation Recommendations
Upgrade xrdp to version 0.10.6.1 or later, where this vulnerability has been fixed. No other mitigations are specified. Patch status is not explicitly confirmed in the vendor advisory, but the description states the issue is fixed in 0.10.6.1, indicating an official fix is available.
CVE-2026-41252: CWE-122: Heap-based Buffer Overflow in neutrinolabs xrdp
Description
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.
CVSS v3.1
Score 9.8critical
Affected software
pkg:github/neutrinolabs/xrdpRun on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-41252 is a heap-based buffer overflow vulnerability in neutrinolabs xrdp (an open source RDP server) affecting versions up to and including 0.10.6. The issue arises from improper validation of color indices in RFB protocol color map messages when operating in vnc-any mode. A malicious VNC server can send crafted messages with out-of-range values, causing an out-of-bounds write on the heap. This memory corruption can lead to denial of service or potentially remote code execution prior to authentication. The vulnerability has been addressed in version 0.10.6.1.
Potential Impact
Successful exploitation can result in denial of service or remote code execution on the affected system without requiring authentication. The vulnerability allows a remote attacker controlling a VNC server to trigger heap corruption by sending maliciously crafted color map messages, potentially compromising the confidentiality, integrity, and availability of the system running xrdp.
Mitigation Recommendations
Upgrade xrdp to version 0.10.6.1 or later, where this vulnerability has been fixed. No other mitigations are specified. Patch status is not explicitly confirmed in the vendor advisory, but the description states the issue is fixed in 0.10.6.1, indicating an official fix is available.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- GitHub_M
- Date Reserved
- 2026-04-18T03:47:03.136Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a5e502f2a4a8d59895edd8b
Added to database: 07/20/2026, 16:43:27 UTC
Last enriched: 07/20/2026, 16:56:57 UTC
Last updated: 07/21/2026, 09:38:56 UTC
Views: 14
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