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.
Advisories

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Fixes

Solution

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Workaround

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History

Fri, 17 Apr 2026 22:15:00 +0000

Type Values Removed Values Added
First Time appeared Neutrinolabs
Neutrinolabs xrdp
Vendors & Products Neutrinolabs
Neutrinolabs xrdp

Fri, 17 Apr 2026 20:30:00 +0000

Type Values Removed Values Added
Description 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.
Title xrdp: Pre-authentication out-of-bounds reads in channel parsers
Weaknesses CWE-125
References
Metrics cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-04-17T20:16:31.248Z

Reserved: 2026-03-23T16:34:59.932Z

Link: CVE-2026-33689

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-04-17T21:16:32.963

Modified: 2026-04-17T21:16:32.963

Link: CVE-2026-33689

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-04-17T22:00:10Z

Weaknesses