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

CVSS 3.1

7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

EPSS

44% chance of exploitation in the next 30 days; higher than 98% of CVEs (scores of 2026-10-25)

CISA KEV

listed 2026-06-05, due 2026-06-19

CWE

CWE-400

Published

2026-06-04

Modified

2026-10-21

Record from

the NVD, synced 2026-10-22

Affected

• solarwinds:serv-u

References

• https://documentation.solarwinds.com/en/success_center/servu/content/release_notes/servu_15-5-4-hotfix-1_release_notes.htm
• https://www.solarwinds.com/trust-center/security-advisories/CVE-2026-28318
• https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-28318

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