CVE-2026-55626

Desktop session takeover via insufficient Xvnc authentication

Published Jul 20, 2026 · Updated Jul 20, 2026

Authentication bypass in neutrinolabs xrdp 0.10.3 through 0.10.6 allows local users to view or control other users' desktops. During the UNIX-domain-socket launch path, xrdp starts Xvnc with insufficient authentication, breaking per-user session isolation. Exploitation requires a local authenticated xrdp session and the Xvnc backend over UNIX domain sockets; xorgxrdp and TCP-backed Xvnc are unaffected.

CVSS severity8.0
High
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Authentication bypass in neutrinolabs xrdp 0.10.3 through 0.10.6 allows local users to view or control other users' desktops. During the UNIX-domain-socket launch path, xrdp starts Xvnc with insufficient authentication, breaking per-user session isolation. Exploitation requires a local authenticated xrdp session and the Xvnc backend over UNIX domain sockets; xorgxrdp and TCP-backed Xvnc are unaffected.

The record

CVE
CVE-2026-55626
Published
Jul 20, 2026
Updated
Jul 20, 2026
Vendor
neutrinolabs
Product
xrdp
Classifications
T1563.002
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jul 20, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 20, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 0.10.6.1

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

neutrinolabs · xrdpversion=< 0.10.6.1

Published CVSS scores

8.0neutrinolabsCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1563.002RDP Hijacking

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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