SolarWinds Serv-U Logic Error Vulnerability Allowing Remote Code Execution

Vulnerability

A logic error vulnerability has been identified in SolarWinds Serv-U versions through 15.5.3. This vulnerability allows a malicious actor with administrative privileges to execute code. On Windows deployments, the risk is considered medium, as services typically run under less-privileged accounts by default.

Impact

Exploitation of this vulnerability could lead to unauthorized code execution on the server.

Remediation

Users can upgrade to SolarWinds Serv-U version 15.5.3, which addresses this vulnerability. For instructions on upgrading, see the SolarWinds Serv-U upgrade guide.

Added: Nov 18, 2025, 9:23 AM
Updated: Nov 18, 2025, 3:03 PM

Vulnerability Rating

Custom Algorithm
spread
3.4
impact
10.0
exploitability
5.0
remediation
7.7
relevance
1.0
threat
0.0
urgency
2.9
incentive
1.7

Our algorithm analyzes dozens of metrics to generate these 8 key vulnerability categories, which are then combined to calculate the overall risk score.