CVE-2026-33145: medium-severity vulnerability in neutrinolabs xrdp
xrdp: Authenticated RCE via unsanitized AlternateShell execution in xrdp-sesman
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 6.3epss 0.4%
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:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
Affected products
neutrinolabs · xrdpRelated CVEs — neutrinolabs xrdp
In the same product, most dangerous first.
CVE-2020-4044HIGHLocal users can perform a buffer overflow attack against the xrdp-sesman service and then impersonate itEPSS 2.3%CVE-2025-68670CRITICALxrdp improperly checks bounds of domain string length, which leads to Stack-based Buffer OverflowEPSS 1.4%CVE-2026-41252CRITICALxrdp: lib_palette_update Heap Buffer Overflow & RCEEPSS 1.1%CVE-2022-23493CRITICALOut of Bound Read in xrdpEPSS 1.0%CVE-2022-23477CRITICALBuffer Overflow in xrdpEPSS 0.9%CVE-2022-23480CRITICALBuffer Overflow in xrdpEPSS 0.9%