Affects SolarWinds Serv-U, a widely used enterprise product; allows privilege escalation to admin/root (CVSS 9.1), posing broad operational risk.
CVE-2026-28316
IDOR in SolarWinds Serv-U allows admin privilege escalation and root command execution.
Is CVE-2026-28316 being exploited?
Not confirmed. CVE-2026-28316 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 2.1% probability of exploitation in the next 30 days.
How severe is CVE-2026-28316?
CVE-2026-28316 is rated Critical with a CVSS score of 9.1. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-28316?
Yes. A fix has been recorded for CVE-2026-28316. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-28316 affect?
CVE-2026-28316 affects SolarWinds Serv-U (Linux/Unix), SolarWinds Serv-U (Windows), Serv-U MFT/Server. Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-28316?
Apply vendor patch when available; restrict admin accounts, isolate Serv‑U, rotate creds and monitor logs.
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Authenticated IDOR enables escalation to system administrator and execution of commands as root; requires a domain account with admin rights; lower impact on Windows.
Immediate action required
- affected15.5.4 HF1 and below
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.