Vulnerability in Neutrinolabs Xrdp
CVE-2026-42218
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.
EPSS exploit prediction
EPSS: 0.004 (34.9th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 35th percentile — 34.9% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.004 · change: +0.002
Affected products
- Neutrinolabs Xrdp — versions < 0.10.6.1
Weakness classification (CWE)
References
- github.com/neutrinolabs/xrdp/releases/tag/v0.10.6.1 (Release Notes)
- github.com/neutrinolabs/xrdp/security/advisories/GHSA-3wr5-fwmh-qh34 (Vendor Advisory)
Frequently asked questions
- What is CVE-2026-42218?
- CVE-2026-42218 is a medium-severity vulnerability in Neutrinolabs Xrdp, classified under Observable Response Discrepancy. CVSS score: 5.3/10. Published 2026-07-20.
- How severe is CVE-2026-42218?
- Medium severity. CVSS v3 base score is 5.3 out of 10.