Vulnerability Description
A type confusion vulnerability exists in Serv-U which when exploited, gives a malicious actor the ability to execute arbitrary native code as 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.
CVSS Score
CRITICAL
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| Solarwinds | Serv-U | < 15.5.4 |
Related Weaknesses (CWE)
References
- https://documentation.solarwinds.com/en/success_center/servu/content/release_notRelease NotesVendor Advisory
- https://www.solarwinds.com/trust-center/security-advisories/CVE-2025-40539Vendor Advisory
FAQ
What is CVE-2025-40539?
CVE-2025-40539 is a vulnerability with a CVSS score of 9.1 (CRITICAL). A type confusion vulnerability exists in Serv-U which when exploited, gives a malicious actor the ability to execute arbitrary native code as privileged account. This issue requires administrative pr...
How severe is CVE-2025-40539?
CVE-2025-40539 has been rated CRITICAL with a CVSS base score of 9.1/10. This is considered a critical vulnerability requiring immediate attention.
Is there a patch for CVE-2025-40539?
Check the references section above for vendor advisories and patch information. Affected products include: Solarwinds Serv-U.