Out-of-bounds Read in Neutrinolabs Xrdp
CVE-2026-33516
xrdp is an open source RDP server. Versions through 0.10.5 contain an out-of-bounds read vulnerability during the RDP capability exchange phase. The issue occurs when memory is accessed before validating the remaining buffer length. A remote, unauthenticated attacker can trigger this vulnerability by sending a specially crafted Confirm Active PDU. Successful exploitation could lead to a denial of service (process crash) or potential disclosure of sensitive information from the process memory. This issue has been fixed in version 0.10.6.
Vulnerability class: Buffer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H.
EPSS exploit prediction
EPSS: 0.007 (50.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 50.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.007 · change: +0.003
Affected products
- Neutrinolabs Xrdp — versions < 0.10.6
Weakness classification (CWE)
References
- github.com/neutrinolabs/xrdp/security/advisories/GHSA-rvh9-9wm3-28c7 (Vendor Advisory)
- github.com/neutrinolabs/xrdp/releases/tag/v0.10.6 (Patch, Release Notes)
Frequently asked questions
- What is CVE-2026-33516?
- CVE-2026-33516 is a critical-severity vulnerability in Neutrinolabs Xrdp, classified under Out-of-bounds Read. CVSS score: 9.1/10. Published 2026-04-17.
- How severe is CVE-2026-33516?
- Critical severity. CVSS v3 base score is 9.1 out of 10.