{ "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": "2026-10-21T10:29:06.114Z" }, "containers": { "cna": { "affected": [ { "defaultStatus": "unaffected", "platforms": [ "Windows", "Linux" ], "product": "Serv-U", "vendor": "SolarWinds", "versions": [ { "lessThanOrEqual": "15.5.4", "status": "affected", "version": "0", "versionType": "custom" } ] } ], "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
" } ], "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": "2026-10-21T10:29:06.114Z" }, "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. " } ], "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.  
" } ], "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" } ] } ] } }