Vulnerability Description
xrdp is an open source RDP server. Versions through 0.10.5 allow an authenticated remote user to execute arbitrary commands on the server due to unsafe handling of the AlternateShell parameter in xrdp-sesman. When the AllowAlternateShell setting is enabled (which is the default when not explicitly configured), xrdp accepts a client-supplied AlternateShell value and executes it via /bin/sh -c during session initialization. This results in shell-interpreted execution of unsanitized, user-controlled input. This behavior effectively provides a scriptable remote command execution primitive over RDP within the security context of the authenticated user, occurring prior to normal window manager startup. This can bypass expected session initialization flows and operational assumptions that restrict execution to interactive desktop environments. This issue has been fixed in version 0.10.6.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Neutrinolabs | Xrdp | < 0.10.6 |
Related Weaknesses (CWE)
References
- https://github.com/neutrinolabs/xrdp/releases/tag/v0.10.6PatchRelease Notes
- https://github.com/neutrinolabs/xrdp/security/advisories/GHSA-rmvv-7633-fg7hVendor Advisory
FAQ
What is CVE-2026-33145?
CVE-2026-33145 is a vulnerability with a CVSS score of 6.3 (MEDIUM). xrdp is an open source RDP server. Versions through 0.10.5 allow an authenticated remote user to execute arbitrary commands on the server due to unsafe handling of the AlternateShell parameter in xrdp...
How severe is CVE-2026-33145?
CVE-2026-33145 has been rated MEDIUM with a CVSS base score of 6.3/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-33145?
Check the references section above for vendor advisories and patch information. Affected products include: Neutrinolabs Xrdp.