What’s Vulnerable › Vulnerabilities

CVE-2024-39917: xrdp allows an ininite number of login attempts

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2024-07-12 · updated 2026-06-17
• Weakness: CWE-307

Description

xrdp is an open source RDP server. xrdp versions prior to 0.10.0 have a vulnerability that allows attackers to make an infinite number of login attempts. The number of max login attempts is supposed to be limited by a configuration parameter `MaxLoginRetry` in `/etc/xrdp/sesman.ini`. However, this mechanism was not effectively working. As a result, xrdp allows an infinite number of login attempts.

Affected products

• neutrinolabs xrdp: before 0.10.0 — fixed in 0.10.0

How to fix

Upgrade to a fixed version: neutrinolabs xrdp 0.10.0. Check the vendor advisory for mitigations.

References

• https://github.com/neutrinolabs/xrdp/commit/19c111c74c913ecc6e4ba9a738ed929a79d2ae8f
• https://github.com/neutrinolabs/xrdp/security/advisories/GHSA-7w22-h4w7-8j5j
• https://github.com/neutrinolabs/xrdp/commit/19c111c74c913ecc6e4ba9a738ed929a79d2ae8f
• https://github.com/neutrinolabs/xrdp/security/advisories/GHSA-7w22-h4w7-8j5j
• https://lists.debian.org/debian-lts-announce/2025/05/msg00018.html

Get alerted when CVE-2024-39917 or the next vulnerability affects your stack