Review reviewCritical

CVE-2026-28302

SolarWinds Serv-U, serv-u

SolarWinds Serv-U is affected by an insecure direct object reference (IDOR) vulnerability that can lead to privilege escalation and remote code execution as root. This issue requires group administrator access. The impact is lower in Windows deployments.

CVSS
9.1
EPSS
0.56%
43.3% percentile
CISA KEV
Not listed
Published
2026.07.22
PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV
Exploit probability0.56%
Technical severityCVSS 9.1

Vulnerability overview

SolarWinds Serv-U is affected by an insecure direct object reference (IDOR) vulnerability that can lead to privilege escalation and remote code execution as root. This issue requires group administrator access. The impact is lower in Windows deployments.

Affected product and versions

Product
SolarWinds Serv-U, serv-u
Affected versions
>= 15.5.4 HF1 and below, < 2026.3
Fixed versions
2026.3

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide
  1. 1
    Identify

    Confirm that SolarWinds Serv-U, serv-u and an affected version are present.

  2. 2
    Prioritize

    Combine exploitation signals with asset exposure and business criticality.

  3. 3
    Remediate

    Follow the vendor advisory or supported update path and preserve rollback options.

  4. 4
    Verify

    Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CWE
CWE-639