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Vulnerability record · CVE-2026-55626 · published 20 July 2026

CVE-2026-55626: Neutrinolabs xrdp improper authentication vulnerability

NNeutrinolabs · Xrdp

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.

7.3 CVSS 3.1 High EPSS 0.19% · top 92.5% CWE-287 · Improper authenticationCWE-306 · Missing authentication for critical function
7.3CVSS 3.1 base score
0.19%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
28 Jul 2026Last modified by NVD

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.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/neutrinolabs/xrdp/releases/tag/v0.10.6.1 ProductRelease Notes
https://github.com/neutrinolabs/xrdp/security/advisories/GHSA-m3xx-cpc4-982r Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2026-55626), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.