CVE-2026-55645

xrdp is an open source RDP server. Versions 0.10.6 and prior contain a vulnerability concerning the processing of Client Control PDUs. During the RDP connection sequence, the parser does not perform sufficient length validation before reading specific data fields from the network stream. A remote, unauthenticated attacker could potentially exploit this flaw by sending a specially crafted, truncated Client Control PDU. Due to missing bounds checks, the xrdp process may perform out-of-bounds memory reads, which can result in the termination of the service (Denial of Service). However, since xrdp forks a new process for each connection by default, an out-of-bounds read causing a process crash is unlikely to bring down the entire xrdp service.This issue has been fixed in version 0.10.6.1.

• CWE-125

• https://github.com/neutrinolabs/xrdp/releases/tag/v0.10.6.1Release Notes
• https://github.com/neutrinolabs/xrdp/security/advisories/GHSA-3m4m-h22g-c7xxVendor Advisory

Published

Jul 20, 2026

Last Modified

Jul 22, 2026

Status

Analyzed

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