CVE-2026-28309

SolarWinds Serv-U Broken Access Control Vulnerability

State: Published
Severity: 9.1 Critical
Published: Jul 21, 2026
Updated: Jul 24, 2026
Reserved: Feb 26, 2026

Description

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.

Scores

CVSS	Score	Vector	Source
3.1	9.1 Critical	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H	SolarWinds
3.1	4.7 Medium	CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L	SolarWinds

Weaknesses

CWE-862 Missing Authorization

Affected Products

Product	Versions
Serv-USolarWinds	15.5.4 HF1 and belowAffected

References

https://https//www.solarwinds.com/trust-center/security-advisories/CVE-2026-28309vendor-advisory
https://documentation.solarwinds.com/en/success_center/servu/content/release_notes/servu_2026-3_release_notes.htmrelease-notes

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