Integer overflow in xrdp - CVE-2026-41521

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Main Vulnerability Database Vulnerabilities #VU136788

Integer overflow in xrdp - CVE-2026-41521

Published: July 2, 2026


Vulnerability identifier: #VU136788
CSH Severity: High
CVSS v4: 8.8 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:L/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-41521
CWE-ID: CWE-190
Exploitation vector: Remote access
Exploit availability: No public exploit available

Vulnerability details

The vulnerability allows a remote attacker to disclose sensitive information or cause a denial of service.

The vulnerability exists due to integer overflow in screen update message processing in vnc-any mode when processing crafted image dimensions from a VNC server. A remote attacker can send crafted screen update messages to disclose sensitive information or cause a denial of service.

Exploitation requires the vnc-any connection mode or another configuration that allows connections to arbitrary VNC hosts.


Affected software

xrdp
Fedora
xrdp

How to mitigate CVE-2026-41521

Install security update from vendor's website.

xrdp - update to 0.10.6.1
xrdp - addressed in versions 0.10.6.1-1.el8, 0.10.6.1-1.el9, 0.10.6.1-1.fc43, 0.10.6.1-1.fc44

External References

Related Security Bulletins