CVE-2025-40549 CRITICAL

CVE-2025-40549: SolarWinds Serv-U Path Restriction Bypass Vulnerability

Vendor Solarwinds
Product Serv-U
Weakness CWE-22 · Path traversal
Published November 18, 2025
Last update February 26, 2026

CVSS base score

9.1/10
Attack vector Network
Attack complexity Low
Privileges required High
User interaction None
Confidentiality High
Integrity High

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

What the vulnerability does

01Description

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.

Key dates

02Disclosure timeline

November 18, 2025 CVE published
February 26, 2026 Record updated