CVE-2026-28316CWE-639

SolarWinds Serv-U Insecure Direct Object Reference (IDOR) Vulnerability

Critical · published July 21, 2026

CVSS v3.1
9.1
EPSS
2%
Percentile
81.9
In the wild
Unconfirmed
What it is

SolarWinds Serv-U is affected by an insecure direct object reference (IDOR) vulnerability that can lead to privilege escalation to a system administrator with the ability to execute commands as the root user. This issue requires a domain account with administrator access. The impact is lower in Windows deployments.

The record
Technical detail
CVSS v3.1
9.1 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
Not supplied
EPSS
0.02134 · 81.9th percentile
Weakness
CWE-639 · Authorization Bypass Through User-Controlled Key
Published
2026-07-21T15:39Z
EPSS history
Timeline
  • 21 JUL 15:39Z
    SolarWinds Serv-U Insecure Direct Object Reference (IDOR) Vulnerability
    cvelistv5