{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-18451", "assignerOrgId": "def9a96e-e099-41a9-bfac-30fd4f82c411", "state": "PUBLISHED", "assignerShortName": "Supermicro", "dateReserved": "2026-07-31T05:37:17.153Z", "datePublished": "2026-10-27T07:51:10.336Z", "dateUpdated": "2026-10-27T07:51:10.336Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "def9a96e-e099-41a9-bfac-30fd4f82c411", "shortName": "Supermicro", "dateUpdated": "2026-10-27T07:51:10.336Z"}, "title": "Supermicro BMC's iKVM feature is vulnerable to KVM session hijacking due to a predictable time-seeded launch token", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-337", "description": "CWE-337: Predictable Seed in a Pseudo-Random Number Generator (PRNG)", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-59", "descriptions": [{"lang": "en", "value": "CAPEC-59: Session Hijacking"}]}], "affected": [{"vendor": "SMCI", "product": "MBD-X12SPI", "platforms": ["BMC"], "versions": [{"status": "affected", "version": "01.07.20", "versionType": "custom"}], "defaultStatus": "affected"}], "descriptions": [{"lang": "en", "value": "The HTML5 KVM-over-IP console authenticates with a token returned by the web interface. Weaknesses in token generation may allow an attacker to guess the session token and take control of the KVM session.", "supportingMedia": [{"type": "text/html", "base64": false, "value": "The HTML5 KVM-over-IP console authenticates with a token returned by the web interface. Weaknesses in token generation may allow an attacker to guess the session token and take control of the KVM session."}]}], "references": [{"url": "https://www.supermicro.com/en/support/security_BMC_IPMI_Oct_2026_1"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV3_1": {"version": "3.1", "attackVector": "NETWORK", "attackComplexity": "HIGH", "privilegesRequired": "NONE", "userInteraction": "REQUIRED", "scope": "UNCHANGED", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "availabilityImpact": "NONE", "baseSeverity": "LOW", "baseScore": 3.1, "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N"}}], "credits": [{"lang": "en", "value": "runZero", "type": "finder"}], "source": {"discovery": "UNKNOWN"}, "x_generator": {"engine": "Vulnogram 1.0.5"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "affected", "platforms": ["BMC"], "product": "MBD-X12SPI", "vendor": "SMCI", "versions": [{"status": "affected", "version": "01.07.20", "versionType": "custom"}]}], "source": "def9a96e-e099-41a9-bfac-30fd4f82c411"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "The HTML5 KVM-over-IP console authenticates with a token returned by the web interface. Weaknesses in token generation may allow an attacker to guess the session token and take control of the KVM session."}], "id": "CVE-2026-18451", "lastModified": "2026-10-27T08:16:53.827", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "HIGH", "attackVector": "NETWORK", "availabilityImpact": "NONE", "baseScore": 3.1, "baseSeverity": "LOW", "confidentialityImpact": "LOW", "integrityImpact": "NONE", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:N", "version": "3.1"}, "exploitabilityScore": 1.6, "impactScore": 1.4, "source": "def9a96e-e099-41a9-bfac-30fd4f82c411", "type": "Secondary"}]}, "published": "2026-10-27T08:16:53.827", "references": [{"source": "def9a96e-e099-41a9-bfac-30fd4f82c411", "url": "https://www.supermicro.com/en/support/security_BMC_IPMI_Oct_2026_1"}], "sourceIdentifier": "def9a96e-e099-41a9-bfac-30fd4f82c411", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-337"}], "source": "def9a96e-e099-41a9-bfac-30fd4f82c411", "type": "Secondary"}]}

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