PT-2026-33507 · Neutrinolabs · Xrdp

Published 2026-04-17 · Updated 2026-04-17 · CVE-2026-33689

Mitre

CVSS v4.0

8.7

High

AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

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.

Fix

Out of bounds Read

Weakness Enumeration

CWE-125

Related Identifiers

CVE-2026-33689

Affected Products

Xrdp

References · 3

• https://nvd.nist.gov/vuln/detail/CVE-2026-33689 · Security Note
• https://github.com/neutrinolabs/xrdp/releases/tag/v0.10.6 · Note
• https://github.com/neutrinolabs/xrdp/security/advisories/GHSA-92mr-6wpp-27jj · Note