CVE-2025-40549: SolarWinds Serv-U

Critical severity, CVSS 9.1. EPSS: 1.1% chance of exploitation in the next 30 days.

A Path Restriction Bypass vulnerability exists in Serv-U that when abused, could give a malicious actor with access to admin privileges the ability to execute code on a directory. This issue requires administrative privileges to abuse. On Windows systems, this scored as medium due to differences in how paths and home directories are handled.

Affected products

• SolarWinds Serv-U: before 15.5.3 (fixed in 15.5.3)

Published 2025-11-18. Last modified 2026-06-17.