Critical severity9.1NVD Advisory· Published Jul 21, 2026· Updated Jul 24, 2026
CVE-2026-28321
CVE-2026-28321
Description
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.
Affected products
2cpe:2.3:a:solarwinds:serv-u:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:solarwinds:serv-u:*:*:*:*:*:*:*:*range: <2026.3
- (no CPE)
Patches
Vulnerability mechanics
References
2- documentation.solarwinds.com/en/success_center/servu/content/release_notes/servu_2026-3_release_notes.htmnvdRelease NotesVendor Advisory
- www.solarwinds.com/trust-center/security-advisories/CVE-2026-28321nvdVendor Advisory
News mentions
2- ⚡ Weekly Recap: Rogue AI Models, $88M Bitcoin Theft, Water-System Attacks and Dangling DNS HijacksThe Hacker News · Aug 3, 2026
- SolarWinds Patches 15 Critical Serv-U Flaws That Could Hand Attackers Root AccessCyber Security News · Jul 22, 2026