CVE-2026-28312
SolarWinds Serv‑U has a critical privilege‑escalation flaw that lets a user with limited group rights become a system administrator and run code as root. The vulnerability is especially dangerous on Linux, while Windows is less affected. It can be exploited over the network without user interaction.
No official fix yet. If none appears within 45 days of first tracking, this entry is removed automatically.
Who is affected
SolarWinds Serv‑U (all versions; no specific CPEs listed). Typical users are administrators of file‑transfer services on Linux/Unix systems.
Real-world impact
An attacker who can reach the Serv‑U server can raise their privileges to full system control, allowing them to install malware, steal data, or disrupt services.
Why this severity
The CVSS score of 9.1 reflects the combination of a network‑based attack, low complexity, high impact on confidentiality, integrity, and availability, and the ability to execute code as root.
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