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 | Due date 2026-06-19
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Problem types
CWE-400 Uncontrolled Resource Consumption
Product status
15.5.4 and previous versions
References
www.cisa.gov/...erabilities-catalog?field_cve=CVE-2026-28318
www.solarwinds.com/...ter/security-advisories/CVE-2026-28318
documentation.solarwinds.com/...4-hotfix-1_release_notes.htm