SolarWinds Serv-U is affected by an IDOR vulnerability rated CVSS 9.1 that can lead to privilege escalation and remote code execution as root when group administrator access is available. The flaw, published July 21 2026, carries lower impact on Windows and is addressed in the Serv-U 2026-3 release.
The vulnerability allows privilege escalation and remote code execution as root on affected deployments.
Its impact is lower in Windows deployments compared with Linux.
Enterprise file-transfer teams running Serv-U on Linux should prioritize the 2026-3 upgrade, as the root-level remote code execution risk is materially higher than on Windows.
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