Medium severity · published Jul 20, 2026
CVE-2026-42218
XRDP is vulnerable to a server timing attack, leading to user enumeration
5.3
CVSS
0.4%
EPSS
No
On KEV
Description
xrdp is an open source RDP server. Versions 0.10.6 and prior contain a timing side-channel vulnerability in the login interface. Due to a discrepancy in response processing times, a remote attacker can infer the existence of a username on the system, leading to unauthorized information disclosure via username enumeration. This issue has been fixed in version 0.10.6.1.
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
Low
Integrity
None
Availability
None
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.4% · higher than 36% 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-2026-42218
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-42218
Release Notes
https://github.com/neutrinolabs/xrdp/releases/tag/v0.10.6.1
Vendor Advisory
https://github.com/neutrinolabs/xrdp/security/advisories/GHSA-3wr5-fwmh-qh34
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