Integer overflow in Neutrinolabs Xrdp
CVE-2026-41521
xrdp is an open source RDP server. Versions 0.10.6 and prior contain an integer overflow vulnerability when processing screen update messages within the vnc-any connection mode. A malicious remote VNC server can send crafted image dimensions that cause an integer overflow during memory buffer size calculation, resulting in an undersized allocation. Subsequent processing of the incoming image data using the original oversized parameters leads to an out-of-bounds read. An unauthenticated remote attacker could exploit this flaw to disclose sensitive information from the heap memory or cause a denial of service (DoS) via a process crash. This issue has been fixed in version 0.10.6.1.
Vulnerability class: Integer Overflow
Published · last modified .
CVSS v3 metric
CVSS v3 base score 8.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:L.
EPSS exploit prediction
EPSS: 0.007 (51.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 51st percentile — 51.4% 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 < 0.10.6.1
Weakness classification (CWE)
References
- github.com/neutrinolabs/xrdp/releases/tag/v0.10.6.1 (Release Notes)
- github.com/neutrinolabs/xrdp/security/advisories/GHSA-v8w6-pf78-9458 (Mitigation, Vendor Advisory)
Frequently asked questions
- What is CVE-2026-41521?
- CVE-2026-41521 is a high-severity vulnerability in Neutrinolabs Xrdp, classified under Integer Overflow or Wraparound. CVSS score: 8.2/10. Published 2026-07-20.
- How severe is CVE-2026-41521?
- High severity. CVSS v3 base score is 8.2 out of 10.