CVE-2026-28321
CriticalCVSS 9.1Exploitation Probability (EPSS)
Low risk34th percentile - higher than 34% of all known CVEs
Summary
SolarWinds Serv-U suffers from a broken access control vulnerability that allows arbitrary file read/write, privilege escalation, and code execution as root. Domain administrator access is required; impact is lower on Windows.
Risk Assessment
An attacker with domain admin privileges can fully compromise the Serv-U server, read/write any files, and execute code with highest privileges.
Recommendation
Update SolarWinds Serv-U to the latest patched version and restrict domain administrator access.
Original NVD description (English source)
SolarWinds Serv-U is affected by a broken access control vulnerability that could allow arbitrary file read and write, which can then be used to escalate privileges and execute code as root. A domain administrator access is required, and the impact is lower in Windows installations.