CVE-2026-28321

CRITICAL CVSS 3.1: 9.1 EPSS 0.41%
Updated Jul 24, 2026
Solarwinds
Parameter Value
CVSS 9.1 (CRITICAL)
Affected Versions before 2026.3
Fixed In 2026.3
Type CWE-284 (Improper Access Control)
Vendor Solarwinds
Public PoC No

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.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
High
Admin privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service

CVSS Vector v3.1

Vulnerable Products 1

Configuration From (including) Up to (excluding)
Solarwinds Serv-U
cpe:2.3:a:solarwinds:serv-u:*:*:*:*:*:*:*:*
2026.3