CVE-2026-33689: xrdp is an open source RDP server. Versions through 0.10.5 have an out-of-bounds read vulnerability in the…
CVE-2026-33689 · Severity: critical · CVSS 9.1 · Published 2026-04-17
xrdp is an open source RDP server. Versions through 0.10.5 have an out-of-bounds read vulnerability in the pre-authentication RDP message parsing logic. A remote, unauthenticated attacker can trigger this flaw by sending a specially crafted sequence of packets during the initial connection phase. This vulnerability results from insufficient validation of input buffer lengths before processing dynamic channel communication. Successful exploitation can lead to a denial-of-service (DoS) condition via a process crash or potential disclosure of sensitive information from the service's memory space. This issue has been fixed in version 0.10.6.
No. Junglewise Threat Intelligence has no report of CVE-2026-33689 being exploited in the wild.
How severe is CVE-2026-33689?
Critical severity, with a CVSS score of 9.1, published 17 April 2026.
Which products and versions are affected?
Neutrinolabs Xrdp. The advisory does not name versions.
Is there a fix for CVE-2026-33689?
No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
Am I affected by CVE-2026-33689?
Check whether you run Neutrinolabs Xrdp. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.