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HIGH CISA KEV

CVE-2026-28318

CVSS v3

7.5

HIGH

EPSS Score

0.1 %

exploit probability

CISA KEV

Yes

known exploited

Exploitation

—

SSVC status

Description

SolarWinds Serv-U is susceptible to specially crafted POST requests that crash the Serv-U service without authentication using Content-Encoding: deflate. Mitigation steps are provided to secure customer environments in the SolarWinds Trust Center if you are unable to deploy the update

CISA Known Exploited Vulnerability

Date Added
2026-06-05
Patch Due Date
2026-06-19
Ransomware Use
Unknown

Technical details

Published
2026-06-04

Frequently asked questions

What is CVE-2026-28318?

SolarWinds Serv-U is susceptible to specially crafted POST requests that crash the Serv-U service without authentication using Content-Encoding: deflate. Mitigation steps are provided to secure customer environments in the SolarWinds Trust Center if you are unable to deploy the update

Is CVE-2026-28318 actively exploited?

Yes. CVE-2026-28318 is on the CISA Known Exploited Vulnerabilities (KEV) catalog, meaning it has been confirmed as actively exploited in the wild. CISA requires federal agencies to patch by 2026-06-19.

What is the CVSS score for CVE-2026-28318?

CVE-2026-28318 has a CVSS v3 base score of 7.5 (HIGH severity).

Is CVE-2026-28318 affecting your environment?

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