Broken Access Control in SolarWinds Serv-U Affects Domain Administrators
CVE-2026-28309

4.7MEDIUM

Key Information:

Vendor

Solarwinds
Status
Serv-u
Vendor
CVE Published:
21 July 2026

What is CVE-2026-28309?

SolarWinds Serv-U contains a vulnerability where improper access control mechanisms enable domain administrators to create unauthorized system administrator accounts. This issue is more pronounced in non-Windows environments, potentially granting elevated privileges to malicious users. Organizations using affected versions should review their security configurations and apply necessary updates to mitigate risks.

Affected Version(s)

Serv-U Windows 15.5.4 HF1 and below

References

https://https://www.solarwinds.com/trust-center/security-...
vendor-advisory
https://documentation.solarwinds.com/en/success_center/se...
release-notes

CVSS V3.1

Score:
4.7
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
High
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Intigriti Bug Bounty Program
.