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
Acknowledgments
Intigriti Bug Bounty Program
Advisory Details
Severity
9.1 Critical
Advisory ID
First Published
07/21/2026
Fixed Version