SolarWinds Serv-U Broken Access Control Vulnerability (CVE-2026-28321)

Summary

SolarWinds Serv-U is affected by a broken access control vulnerability that could allow arbitrary file read and write, which can then be used to escalate privileges and execute code as root. A domain administrator access is required, and the impact is lower in Windows installations.


Affected Products

SolarWinds Serv-U 15.5.4 HF1 and below


Fixed Software Release

SolarWinds Serv-U 2026.3


Acknowledgments

Intigriti Bug Bounty Program

Advisory Details
Severity

9.1 Critical

Advisory ID
First Published

07/21/2026

Fixed Version
CVSS Score
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