Heap-based buffer overflow in xrdp - CVE-2026-35512
Published: April 17, 2026
Vulnerability identifier: #VU126458
CSH Severity: Medium
CVSS v4: 8.7 [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]
CVE-ID: CVE-2026-35512
CWE-ID: CWE-122
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
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.
Affected software
xrdp
Debian Linux
Fedora
xrdp (Debian package)
xrdp
Debian Linux
Fedora
xrdp (Debian package)
xrdp
How to mitigate CVE-2026-35512
Install security update from vendor's website.
xrdp - update to 0.10.6
xrdp (Debian package) - update to 0.10.1-3.1+deb13u2
xrdp - addressed in versions 0.10.6-1.el8, 0.10.6-1.el9, 0.10.6-1.fc42, 0.10.6-1.fc43, 0.10.6-1.fc44
xrdp (Debian package) - update to 0.10.1-3.1+deb13u2
xrdp - addressed in versions 0.10.6-1.el8, 0.10.6-1.el9, 0.10.6-1.fc42, 0.10.6-1.fc43, 0.10.6-1.fc44