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OpenAdvisories
High · 8.0 CVE-2026-55626 EUVD-2026-46041

xrdp: No authentication required with Xvnc backend on RHEL 9

Published Jul 20, 2026 · Updated Jul 24, 2026 · Assigned by GitHub_M

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.

Affected products

VendorProductAffectedFixed
neutrinolabs xrdp < 0.10.6.1 —

Fixed in Linux distributions

Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.

ReleasePackageFixed inAdvisory
Debian 14 xrdp 0.10.6.1-2 —
ReleasePackageFixed inAdvisory
Ubuntu 26.10 xrdp No fix yet —
Ubuntu 26.04 LTS xrdp No fix yet —
Ubuntu 25.10 xrdp No fix yet —
Ubuntu 24.04 LTS xrdp No fix yet —
Ubuntu 22.04 LTS xrdp No fix yet —
Show 4 more (older releases, extended support, other products)
ReleasePackageFixed inAdvisory
Ubuntu Pro 20.04 LTS xrdp No fix yet —
Ubuntu Pro 18.04 LTS xrdp No fix yet —
Ubuntu Pro 16.04 LTS xrdp No fix yet —
Ubuntu Pro 14.04 LTS xrdp No fix yet —
ReleasePackageFixed inAdvisory
openSUSE Tumbleweed xrdp 0.10.6.1-1.1 openSUSE-SU-2026:11543-1

Advisories 1

References