CVE-2026-28312
SolarWinds Serv-U Privilege Escalation Vulnerability
No known exploitation. EPSS puts it in the 45th percentile. A vendor fix is available.
What to do
The vendor has published a fix. Version details are below where the sources state them.
Steps
Written by AI from the record- Check whether you run Serv-U and identify its installed version and users with group-level access.
- Upgrade Serv-U to version 2026.3.
- Until upgraded, restrict group-level accounts to essential staff and review their access.
- Review Serv-U and server records for unexpected administrator accounts or command activity.
What it is
From the CVE record
SolarWinds Serv-U is affected by a privilege escalation vulnerability. This would elevate a group’s access to system administrator and allow code execution as root. The impact is lower in Windows deployments.
In plain language
Written by AI from the recordServ-U has a serious flaw that can let a user with group-level access take full control of the server, so businesses running it should upgrade promptly.
CVE-2026-28312 is a network-reachable privilege-escalation flaw in Serv-U that lets an authenticated group-level user become a system administrator and execute code as root.
If you're affected
- Full server takeover
- Unauthorized administrator access
- Root-level code execution
- Sensitive data exposure
- Service disruption
Exploitation
Where each signal puts this CVE on the scale from published to confirmed exploited.
- CISA KEV
Not in the catalog. CISA has not confirmed exploitation.
- Public exploits
No public exploit or proof of concept found in the sources we track.
- EPSS
0.6% chance of exploitation activity in the next 30 days, which ranks it in the 45th percentile of scored CVEs.
Exploit Prediction Scoring System, FIRST.org. A probability, not a confirmation.
Lifecycle
12 events over 3 days, from the signal feeds we watch.
- OpenVAS check addedpatch available, patch available, record updated, record updated
- Patch availablerecord updated
- Patch availablepatch available, published, weakness classified, record updated
Affected products
And 1 more affected product. See all after sign-in
Technical detail
CVSS 3.1 vector
Open in the CVSS calculatorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
Scored 9.1 by NVD.
How it is reached
- Attack Vector NetworkExploitable remotely over the network without any special conditions
- Attack Complexity LowNo special conditions — the attack can be reliably reproduced
- Privileges Required HighRequires admin or elevated privileges
- User Interaction NoneNo user interaction needed — fully automated exploitation
Scope
- Scope ChangedThe exploit can affect other components (e.g. sandbox escape, host compromise from VM)
Impact if exploited
- Confidentiality HighTotal information disclosure — all data in the component is compromised
- Integrity HighTotal loss of integrity — attacker can modify any data in the component
- Availability HighTotal denial of service — the component is completely unavailable
Weaknesses
Sources
References in the record
In the news
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