Heap-based buffer overflow in xrdp - CVE-2026-44178

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Main Vulnerability Database Vulnerabilities #VU136786

Heap-based buffer overflow in xrdp - CVE-2026-44178

Published: July 2, 2026


Vulnerability identifier: #VU136786
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-2026-44178
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 virtual channel forwarding mechanism when forwarding data from a remote client to the internal channel server. A remote user can send a specially crafted virtual channel message that exceeds the buffer capacity to execute arbitrary code or cause a denial of service.


Affected software

xrdp
Fedora
xrdp

How to mitigate CVE-2026-44178

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