Serv-U
CVE-2025-40539: SolarWinds Serv-U Type Confusion Remote Code Execution Vulnerability
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.
Published
Automatic summary from the vendor's CVE record. We haven't written a full analysis of this vulnerability yet.
Affected and fixed versions
| Product / branch | Fixed in |
|---|---|
| Serv-U (Windows, Linux) SolarWinds Serv-U 15.5 | See the advisory |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
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.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 13 Oct 2026.