High severity · published Jul 20, 2026
CVE-2026-55626
xrdp: No authentication required with Xvnc backend on RHEL 9
7.3
CVSS
0.2%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:L
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
High
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 8% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
XR
xrdp · neutrinolabs
< 0.10.6.1 · source: vendor, NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-55626
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-55626
Product
https://github.com/neutrinolabs/xrdp/releases/tag/v0.10.6.1
Vendor Advisory
https://github.com/neutrinolabs/xrdp/security/advisories/GHSA-m3xx-cpc4-982r
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