SolarWindsCVE-2026-28321
SolarWinds Serv-U: improper access control
Critical9.1CVE-2026-28321 · Published Jul 21, 2026 · updated Jul 24, 2026
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 versions
| Package | Affected | Fixed in |
|---|---|---|
| Serv-U Product | <= 15.5.4 HF1 and below | No fix yet |
Details and references
- CVSS 3.1
- CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
- Severity from
- the vendor (its own CVE record or advisory)
- Weakness
- CWE-284
More SolarWinds advisories
All SolarWinds| Date | Advisory | Severity | Fixed in |
|---|---|---|---|
| Jul 21 | SolarWinds Serv-U: insecure direct object reference | Critical9.1 | No fix yet |
| Jul 21 | SolarWinds Serv-U: privilege escalation | Critical9.1 | No fix yet |
| Jul 21 | SolarWinds Serv-U: insecure direct object reference | Critical9.1 | No fix yet |
| Jul 21 | SolarWinds Serv-U: insecure direct object reference | Critical9.1 | No fix yet |
| Jul 21 | SolarWinds Serv-U: cross-site scripting | Medium6.2 | No fix yet |
| Jul 21 | SolarWinds Serv-U: insecure direct object reference | Critical9.1 | No fix yet |