Serv-U
CVE-2026-28307: SolarWinds Serv-U Privilege Escalation Vulnerability
SolarWinds Serv-U is affected by a privilege escalation vulnerability that allows a domain user group to be elevated into an administrator group.
Published
ExploitedNot in CISA KEV
Ransomware useNot reportedPer CISA
SeverityCRITICALCVSS 3.1 9.1
EPSS0.50%Chance of exploitation in 30 days
Public exploitNot tracked
FixSee advisory
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 15.5 | See the advisory |
Always confirm against the vendor advisory, which lists every fixed hotfix.
What it is
SolarWinds Serv-U is affected by a privilege escalation vulnerability that allows a domain user group to be elevated into an administrator group. The impact is lower in Windows deployments.
Sources
KEV status, EPSS score and vendor data refreshed automatically, last on 13 Oct 2026.