xrdp: Pre-authentication out-of-bounds reads in channel parsers
Summary
xrdp: Pre-authentication out-of-bounds reads in channel parsers
Original description
The description as published by the source.
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.
Source: OSV.dev (Open Source Vulnerabilities) NVD GitHub Advisory OSV
Fix status by distribution
Fixed packages published by each distribution for this CVE
- Debian DEBIAN-CVE-2026-33689 xrdp
- Ubuntu UBUNTU-CVE-2026-33689 xrdp
References
- advisory github.com
- advisory github.com
- advisory nvd.nist.gov
- web github.com