What’s Vulnerable › Vulnerabilities

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

• Severity: critical (CVSS 9.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2026-07-21 · updated 2026-10-24
• Weakness: CWE-862

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.

Affected products

• SolarWinds Serv-U: before 2026.3 — fixed in 2026.3

How to fix

Upgrade to a fixed version: SolarWinds Serv-U 2026.3. Check the vendor advisory for mitigations.

References

• https://documentation.solarwinds.com/en/success_center/servu/content/release_notes/servu_2026-3_release_notes.htm
• https://https://www.solarwinds.com/trust-center/security-advisories/CVE-2026-28309

Get alerted when CVE-2026-28309 or the next vulnerability affects your stack