# CVE-2026-41252: xrdp: xrdp is an open source RDP server

CVE-2026-41252 is fixed in xrdp on 1 platform, first by DEBIAN-CVE-2026-41252, released August 1, 2026. It is not reported as exploited. Patch Radar priority: Urgent.

- Web page: https://patchblox.com/security/cve/CVE-2026-41252
- Priority: Urgent
- CVSS: 9.8 (critical)
- EPSS: 0.0111
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jul 20, 2026

## 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.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | xrdp Debian 12.15 (bookworm) | 0.9.21.1-1+deb12u3 | [DEBIAN-CVE-2026-41252](https://patchblox.com/security/data/fix/linux/debian-cve-2026-41252.md) | Aug 1, 2026 |
| Linux | xrdp Debian 13.5 (trixie) | 0.10.1-3.1+deb13u2 | [DEBIAN-CVE-2026-41252](https://patchblox.com/security/data/fix/linux/debian-cve-2026-41252.md) | Aug 1, 2026 |
| Linux | xrdp Debian 14 | 0.10.6.1-2 | [DEBIAN-CVE-2026-41252](https://patchblox.com/security/data/fix/linux/debian-cve-2026-41252.md) | Aug 1, 2026 |

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Data as of 2026-11-08T00:53:09Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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