neutrinolabs xrdp up to 0.10.5 EGFX size heap-based overflow

Summaryinfo

A vulnerability, which was classified as critical, has been found in neutrinolabs xrdp up to 0.10.5. This affects an unknown part of the component EGFX. Performing a manipulation of the argument size results in heap-based overflow. This vulnerability is reported as CVE-2026-35512. The attack is possible to be carried out remotely. No exploit exists. It is advisable to upgrade the affected component.

Detailsinfo

A vulnerability was found in neutrinolabs xrdp up to 0.10.5. It has been classified as critical. This affects an unknown functionality of the component EGFX. The manipulation of the argument size with an unknown input leads to a heap-based overflow vulnerability. CWE is classifying the issue as CWE-122. A heap overflow condition is a buffer overflow, where the buffer that can be overwritten is allocated in the heap portion of memory, generally meaning that the buffer was allocated using a routine such as malloc(). This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

xrdp is an open source RDP server. Versions through 0.10.5 have a heap-based buffer overflow in the EGFX (graphics dynamic virtual channel) implementation due to insufficient validation of client-controlled size parameters, allowing an out-of-bounds write via crafted PDUs. Pre-authentication exploitation can crash the process, while post-authentication exploitation may achieve remote code execution. This issue has been fixed in version 0.10.6. If users are unable to immediately update, they should run xrdp as a non-privileged user (default since 0.10.2) to limit the impact of successful exploitation.

It is possible to read the advisory at github.com. This vulnerability is uniquely identified as CVE-2026-35512 since 04/03/2026. The exploitability is told to be easy. It is possible to initiate the attack remotely. Technical details of the vulnerability are known, but there is no available exploit.

Upgrading to version 0.10.6 eliminates this vulnerability.

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Productinfo

Vendor

• neutrinolabs

Name

• xrdp

Version

• 0.10.0
• 0.10.1
• 0.10.2
• 0.10.3
• 0.10.4
• 0.10.5

Website

• Product: https://github.com/neutrinolabs/xrdp/

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