CVE-2026-28321

SolarWinds Serv-U Broken Access Control Vulnerability

Published Jul 21, 2026 CVSS 3.1 · 4.7 Medium EPSS < 1% KEV · Not listed
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.

Remediation

Vendor Solution

SolarWinds recommends customers upgrade to Serv-U version 2026.3 as soon as is practical.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Solarwinds
Solarwinds serv-u
Vendors & Products Solarwinds
Solarwinds serv-u
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
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.
Title SolarWinds Serv-U Broken Access Control Vulnerability
Weaknesses CWE-284
References
Metrics cvssV3_1

{'score': 4.7, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:L/I:L/A:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
SolarWinds
Published
Updated
Jul 24, 2026, 3:55 AM
Reserved
Feb 26, 2026, 2:46 PM
Status
Analyzed
Published
Jul 21, 2026, 4:17 PM
Modified
Oct 24, 2026, 8:10 PM