{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-28318","assignerOrgId":"49f11609-934d-4621-84e6-e02e032104d6","state":"PUBLISHED","assignerShortName":"SolarWinds","dateReserved":"2026-02-26T14:46:41.520Z","datePublished":"2026-06-04T14:05:58.218Z","dateUpdated":"2026-06-06T03:55:57.072Z"},"containers":{"cna":{"affected":[{"defaultStatus":"unaffected","platforms":["Windows","Linux"],"product":"Serv-U","vendor":"SolarWinds","versions":[{"status":"affected","version":"15.5.4 and previous versions"}]}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"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  <br>"}],"value":"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"}],"impacts":[{"capecId":"CAPEC-469","descriptions":[{"lang":"en","value":"CAPEC-469 HTTP DoS"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-400","description":"CWE-400 Uncontrolled Resource Consumption","lang":"en","type":"CWE"}]}],"providerMetadata":{"orgId":"49f11609-934d-4621-84e6-e02e032104d6","shortName":"SolarWinds","dateUpdated":"2026-06-04T14:05:58.218Z"},"references":[{"url":"https://www.solarwinds.com/trust-center/security-advisories/CVE-2026-28318"},{"url":"https://documentation.solarwinds.com/en/success_center/servu/content/release_notes/servu_15-5-4-hotfix-1_release_notes.htm"}],"solutions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"Upgrade to SolarWinds Serv-U 15.5.4 Hotfix 1. Use the mitigation steps until the upgrade is possible.&nbsp;"}],"value":"Upgrade to SolarWinds Serv-U 15.5.4 Hotfix 1. Use the mitigation steps until the upgrade is possible."}],"source":{"discovery":"UNKNOWN"},"title":"SolarWinds Serv-U Unauthenticated Denial of Service Vulnerability","workarounds":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"Block any POST requests containing 'Content-Encoding: deflate'. This function is not required for SolarWinds Serv-U.&nbsp;&nbsp;<br>"}],"value":"Block any POST requests containing 'Content-Encoding: deflate'. This function is not required for SolarWinds Serv-U."}],"x_generator":{"engine":"Vulnogram 0.1.0-dev"}},"adp":[{"references":[{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-28318","tags":["government-resource"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-06-05T00:00:00+00:00","options":[{"Exploitation":"active"},{"Automatable":"yes"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3","id":"CVE-2026-28318"}}},{"other":{"type":"kev","content":{"dateAdded":"2026-06-05","reference":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-28318"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-06-06T03:55:57.072Z"},"timeline":[{"time":"2026-06-05T00:00:00.000Z","lang":"en","value":"CVE-2026-28318 added to CISA KEV"}]}]}}