# CVE-2026-55626: neutrinolabs xrdp improper authentication in Xvnc backend

Source: https://junglewise.ai/threats/cve-2026-55626-neutrinolabs-xrdp-improper-authentication-in-xvnc-backend  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-07-20. Updated: 2026-07-20  
License: CC BY 4.0 with a link back

CVE-2026-55626 · Severity: high · CVSS 8 · Published 2026-07-20

xrdp is an open-source tool that allows users to remotely access a computer's desktop. A security flaw in certain versions allows a person already logged into the system to bypass security boundaries and view or control the active desktop sessions of other users. This could lead to the theft of sensitive information or unauthorized actions being taken in another user's name.

Technologies: [Neutrinolabs Xrdp](https://junglewise.ai/threats/technologies/xrdp). Vendors: [Neutrinolabs](https://junglewise.ai/threats/vendors/neutrinolabs).

## Quick answers

**Is CVE-2026-55626 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-55626 being exploited in the wild.

**How severe is CVE-2026-55626?** High severity, with a CVSS score of 8, published 20 July 2026.

**Which products and versions are affected?** Neutrinolabs Xrdp 0.10.3 - 0.10.6.

**Is there a fix for CVE-2026-55626?** A patch was published on 2026-07-06: Version 0.10.6.1 released Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-55626 attacked?** It is attacked with local access, in a hosted service.

**Am I affected by CVE-2026-55626?** Check whether you run Neutrinolabs Xrdp at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## Technical details

A vulnerability exists in xrdp versions 0.10.3 through 0.10.6 due to improper authentication when initializing Xvnc backends over UNIX domain sockets (UDS). When a session is started in this specific configuration, the Xvnc process is launched without sufficient authentication checks, failing to enforce proper session isolation. A local authenticated attacker can exploit this to connect to and intercept or control the desktop sessions of other users on the same host. The vulnerability is specific to the UDS transport; users utilizing xorgxrdp or Xvnc over TCP sockets are not affected. The issue is addressed in version 0.10.6.1 by implementing proper authentication for UDS-based Xvnc sessions.

## Affected products

- neutrinolabs xrdp 0.10.3 - 0.10.6

## Timeline

- 2026-07-01: advisory: Initial GitHub security advisory published
- 2026-07-06: patched: Version 0.10.6.1 released
- 2026-07-20: disclosed: CVE-2026-55626 published to NVD

## References

- [https://github.com/neutrinolabs/xrdp/releases/tag/v0.10.6.1](https://github.com/neutrinolabs/xrdp/releases/tag/v0.10.6.1)
- [https://github.com/neutrinolabs/xrdp/security/advisories/GHSA-m3xx-cpc4-982r](https://github.com/neutrinolabs/xrdp/security/advisories/GHSA-m3xx-cpc4-982r)

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