Heap-based buffer overflow in xrdp - CVE-2026-35512
Published: April 17, 2026
Vulnerability identifier: #VU126458
CSH Severity: Medium
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Green
CVE-ID: CVE-2026-35512
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: neutrinolabs
Affected software:
xrdp
xrdp
Detailed vulnerability description
The vulnerability allows a remote user to execute arbitrary code or cause a denial of service.
The vulnerability exists due to heap-based buffer overflow in the EGFX channel dynvc processing when processing client-controlled size parameters in specially crafted PDUs. A remote user can send specially crafted PDUs to execute arbitrary code or cause a denial of service.
Pre-authentication reachability is possible, but arbitrary code execution typically requires exploitation after successful user authentication.
How to mitigate CVE-2026-35512
Install security update from vendor's website.