SolarWinds Serv-U Broken Access Control Lets a Domain Administrator Create System Administrator Accounts Without Proper Authorization

Last refreshed2026-09-28

Status: UPDATED | Advisory ID: CVE-2026-28309

Key Details

CVE	CVE-2026-28309
CVSS Score / Version	9.1 (Critical) / CVSS v3.1
Updated	2026-07-24
CVSS Vector	`CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H`
CVSS Prose	attack vector is network; attack complexity is low; privileges required is high; user interaction is none; scope is changed; confidentiality impact is high; integrity impact is high; availability impact is high.
Affected products	SolarWinds Serv-U
Classified as	CWE-862 (Missing Authorization)

Affected Products, Subsystems & Sectors

Vendor	Product	Affected Versions	Patch Status
SolarWinds	Serv-U

Vendor

Product

Affected Versions

Patch Status

SolarWinds

Serv-U

Subsystems	General OT
Sectors	Multiple

What to Know

SolarWinds Serv-U is affected by a broken access control vulnerability that allows a domain administrator to create system administrator accounts. The impact is lower in Windows deployments. (NVD)

What to Do

Monitor SolarWinds's web page for any future patch releases. See vendor advisory link below.

References

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-28309
CVE	https://www.cve.org/CVERecord?id=CVE-2026-28309
Vendor advisory	https://documentation.solarwinds.com/en/success_center/servu/content/release_notes/servu_2026-3_release_notes.htm

Source

Reference

NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-28309

CVE

https://www.cve.org/CVERecord?id=CVE-2026-28309

Vendor advisory