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Vulnerabilities CVE-2026-55626

CVE-2026-55626

High
Open
TLP:CLEAR

xrdp: No authentication required with Xvnc backend on RHEL 9

NVD CVE.org
Critical Infrastructure

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Description

xrdp is an open source RDP server. In versions 0.10.6 and prior, when an authenticated user session is initialized using the Xvnc backend over UNIX domain sockets, the Xvnc process is launched with insufficient authentication mechanisms. A local authenticated attacker could exploit this vulnerability to bypass intended session isolation, allowing them to unauthorizedly view or control the active desktop sessions of other users on the same system. Users using other backends, such as xorgxrdp or Xvnc over TCP sockets, are not affected. This issue has been fixed in version 0.10.6.1.

Details

CVSS Score
8.0
EPSS Score
0.13%

2.7th percentile

CVSS Vector
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
Confidence
90%
Published
Jul 20, 2026
Last Modified
Jul 24, 2026
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