CVE-2026-28310
SolarWinds Serv‑U has a critical privilege‑escalation flaw that lets a domain administrator become a system administrator. The flaw can be abused over the network without user interaction. The vulnerability is rated CVSS 9.1.
No official fix yet. If none appears within 45 days of first tracking, this entry is removed automatically.
Who is affected
SolarWinds Serv‑U servers that are part of a Windows domain, particularly those where domain administrators have access.
Real-world impact
An attacker who can reach the Serv‑U server can raise their privileges from a domain admin to a system admin, giving them full control over the server and potentially the entire network.
Why this severity
The CVSS score of 9.1 reflects that the attack can be performed over the network (AV:N), requires low effort (AC:L), needs high privileges (PR:H) but no user interaction (UI:N). The impact is complete compromise of confidentiality, integrity, and availability (C:H/I:H/A:H).
What to do about it
No official fix or mitigation is documented in the sources yet. Monitor the vendor advisory and apply the patch as soon as it is released.
No fix documented in sources
Timeline
- Jul 21, 2026 · 11d agoPublishedDisclosed and added to the National Vulnerability Database.
- Jul 24, 2026 · 8d agoAdvisory updatedThe NVD record was last revised.
How it’s attacked
References & advisories
- documentation.solarwinds.com/en/success_center/servu/con…release notesvendor advisory
- https//www.solarwinds.com/trust-c…vendor advisory