neutrinolabs xrdp up to 0.10.5 Message xrdp.ini integrity check

Summaryinfo

A vulnerability, which was classified as critical, was found in neutrinolabs xrdp up to 0.10.5. Affected by this vulnerability is an unknown functionality of the file xrdp.ini of the component Message Handler. Such manipulation leads to integrity check. This vulnerability is traded as CVE-2026-32105. The attack may be launched remotely. There is no exploit available. You should upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in neutrinolabs xrdp up to 0.10.5. Affected by this issue is some unknown functionality of the file xrdp.ini of the component Message Handler. The manipulation with an unknown input leads to a integrity check vulnerability. Using CWE to declare the problem leads to CWE-354. The product does not validate or incorrectly validates the integrity check values or "checksums" of a message. This may prevent it from detecting if the data has been modified or corrupted in transmission. Impacted is confidentiality, integrity, and availability. CVE summarizes:

xrdp is an open source RDP server. In versions through 0.10.5, xrdp does not implement verification for the Message Authentication Code (MAC) signature of encrypted RDP packets when using the "Classic RDP Security" layer. While the sender correctly generates signatures, the receiving logic lacks the necessary implementation to validate the 8-byte integrity signature, causing it to be silently ignored. An unauthenticated attacker with man-in-the-middle (MITM) capabilities can exploit this missing check to modify encrypted traffic in transit without detection. It does not affect connections where the TLS security layer is enforced. This issue has been fixed in version 0.10.6. If users are unable to immediately upgrade, they should configure xrdp.ini to enforce TLS security (security_layer=tls) to ensure end-to-end integrity.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-32105 since 03/10/2026. The exploitation is known to be easy. The attack may be launched remotely. No form of authentication is required for exploitation. Technical details are known, but there is no available exploit.

By approaching the search of inurl:xrdp.ini it is possible to find vulnerable targets with Google Hacking.

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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