CVE-2026-28318

SolarWinds Serv-U Unauthenticated Denial of Service Vulnerability

High 7.5 KEV Exploitation: active

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

Assigner
SolarWinds
Published
2026-06-04
Updated
2026-10-21
Reserved
2026-02-26

Listed in CISA's Known Exploited Vulnerabilities catalog on 2026-06-05. View in KEV →

Scores

SourceCVSSScoreSeverityVector
SolarWinds3.17.5HighCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Weaknesses

Affected

VendorProductVersions
SolarWinds Serv-U
Windows, Linux
<= 15.5.4 (affected)
others: unaffected

References

Full CVE JSON record (5.2)

API · GitHub · cve.org

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