CVE-2025-40549

CRITICAL 9.1

SolarWinds Serv-U Path Restriction Bypass Vulnerability

CVSS Score

9.1

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-22
Vendor	solarwinds
Product	serv-u
Published	Nov 18, 2025
Last Updated	Feb 26, 2026

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CVSS v3 Breakdown

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

High

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

Affected Versions

SolarWinds / Serv-U

SolarWinds Serv-U 15.5.2 and prior versions

References

NVD ↗ CVE.org ↗ EPSS Data ↗

solarwinds.com: https://www.solarwinds.com/trust-center/security-advisories/CVE-2025-40549 documentation.solarwinds.com: https://documentation.solarwinds.com/en/success_center/servu/content/release_notes/servu_15-5-3_release_notes.htm

Credits

🔍 Maurice Moss