CVE-2026-28309 SolarWinds Serv-U Broken Access Control Vulnerability

What is CVE-2026-28309?

CVE-2026-28309 is a critical vulnerability in Solarwinds Serv-U, published on 21 Jul 2026. An attacker needs administrator access to exploit it, with no action from the victim.

Official description

SolarWinds Serv-U is affected by a broken access control vulnerability that allows a domain administrator to create system administrator accounts. The impact is lower in Windows deployments.

Weakness: CWE-862

Which versions are affected by CVE-2026-28309?

It affects 1 product.

Products include Solarwinds Serv-U.

How do I fix CVE-2026-28309?

No fix has been published for CVE-2026-28309 yet. Limit exposure of the affected software until one is available.

Is CVE-2026-28309 being exploited?

There is no known exploitation of CVE-2026-28309 in the wild and no public exploit code.

Other vulnerabilities in Solarwinds Serv-U

• CVE-2021-35211 SolarWinds Serv-U Remote Code Execution Exploited Critical 9.0
• CVE-2024-28995 SolarWinds Serv-U Path Traversal Vulnerability Exploited High 8.6
• CVE-2026-28318 SolarWinds Serv-U Uncontrolled Resource Consumption Exploited High 7.5
• CVE-2021-35247 SolarWinds Serv-U Improper Input Validation Exploited Medium 4.3
• CVE-2020-35481 Code injection in n/a Critical 9.8

All Solarwinds Serv-U vulnerabilities

Sources

• CVE record
• NVD
• OSV
• GitHub advisory
• How this page is made

Also known as GHSA-vv5r-rfhv-vx6x.