Auth bypass in Solarwinds Serv-U
CVE-2025-40541
An Insecure Direct Object Reference (IDOR) vulnerability exists in Serv-U, which when exploited, gives a malicious actor the ability to execute native code as a privileged account. This issue requires administrative privileges to abuse. On Windows deployments, the risk is scored as a medium because services frequently run under less-privileged service accounts by default.
EPSS: 0.006 (45.0th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.
Affected products
- Solarwinds Serv-u — versions SolarWinds Serv-U 15.5.3 and prior versions
Weakness classification (CWE)
References
- psirt@solarwinds.com (Vendor Advisory)
- psirt@solarwinds.com (Release Notes, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-40541?
- CVE-2025-40541 is a critical-severity vulnerability in Solarwinds Serv-U, classified under Incorrect Type Conversion or Cast. CVSS score: 9.1/10. Published 2026-02-24.
- How severe is CVE-2025-40541?
- Critical severity. CVSS v3 base score is 9.1 out of 10.