Vulnerability · Published Jul 20, 2026 · Assigned by GitHub_M
CVE-2026-55626xrdp: No authentication required with Xvnc backend on RHEL 9
High 8.0
In plain English
A high-severity missing authentication in xrdp from neutrinolabs. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 8% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official 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 packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:14 | xrdp | 0.10.6.1-2 | DEBIAN-CVE-2026-55626 |
| Ubuntu:22.04:LTS | xrdp | no fix listed | UBUNTU-CVE-2026-55626 |
| Ubuntu:24.04:LTS | xrdp | no fix listed | UBUNTU-CVE-2026-55626 |
| Ubuntu:25.10 | xrdp | no fix listed | UBUNTU-CVE-2026-55626 |
| Ubuntu:26.04:LTS | xrdp | no fix listed | UBUNTU-CVE-2026-55626 |
| Ubuntu:26.10 | xrdp | no fix listed | UBUNTU-CVE-2026-55626 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| neutrinolabs | xrdp | < 0.10.6.1 |
Weakness: CWE-306, CWE-287 · Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
References
- https://github.com/neutrinolabs/xrdp/security/advisories/GHSA-m3xx-cpc4-982r x_refsource_CONFIRM
- https://github.com/neutrinolabs/xrdp/releases/tag/v0.10.6.1 x_refsource_MISC