{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-65641", "assignerOrgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1", "state": "PUBLISHED", "assignerShortName": "hackerone", "dateReserved": "2026-07-22T15:00:06.103Z", "datePublished": "2026-08-26T21:21:40.955Z", "dateUpdated": "2026-08-26T21:21:40.955Z"}, "containers": {"cna": {"descriptions": [{"lang": "en", "value": "A vulnerability allowing an unauthenticated network attacker to coerce SMB authentication from the service account."}], "affected": [{"defaultStatus": "unaffected", "vendor": "Veeam", "product": "One", "versions": [{"version": "0", "status": "affected", "lessThan": "13.1", "versionType": "semver"}, {"version": "0", "status": "affected", "lessThan": "13.0.2", "versionType": "semver"}]}], "references": [{"url": "https://www.veeam.com/kb4905"}], "metrics": [{"cvssV4_0": {"version": "4.0", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:H/SI:L/SA:L", "baseScore": 9.3, "baseSeverity": "CRITICAL"}}], "problemTypes": [{"descriptions": [{"type": "CWE", "lang": "en", "cweId": "CWE-288", "description": "CWE-288 Authentication Bypass Using an Alternate Path or Channel"}]}], "providerMetadata": {"orgId": "36234546-b8fa-4601-9d6f-f4e334aa8ea1", "shortName": "hackerone", "dateUpdated": "2026-08-26T21:21:40.955Z"}}}}

{}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "One", "vendor": "Veeam", "versions": [{"lessThan": "13.1", "status": "affected", "version": "0", "versionType": "semver"}, {"lessThan": "13.0.2", "status": "affected", "version": "0", "versionType": "semver"}]}], "source": "support@hackerone.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A vulnerability allowing an unauthenticated network attacker to coerce SMB authentication from the service account."}], "id": "CVE-2026-65641", "lastModified": "2026-08-26T22:16:25.747", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 9.3, "baseSeverity": "CRITICAL", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "NOT_DEFINED", "integrityRequirement": "NOT_DEFINED", "modifiedAttackComplexity": "NOT_DEFINED", "modifiedAttackRequirements": "NOT_DEFINED", "modifiedAttackVector": "NOT_DEFINED", "modifiedPrivilegesRequired": "NOT_DEFINED", "modifiedSubAvailabilityImpact": "NOT_DEFINED", "modifiedSubConfidentialityImpact": "NOT_DEFINED", "modifiedSubIntegrityImpact": "NOT_DEFINED", "modifiedUserInteraction": "NOT_DEFINED", "modifiedVulnAvailabilityImpact": "NOT_DEFINED", "modifiedVulnConfidentialityImpact": "NOT_DEFINED", "modifiedVulnIntegrityImpact": "NOT_DEFINED", "privilegesRequired": "NONE", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "LOW", "subConfidentialityImpact": "HIGH", "subIntegrityImpact": "LOW", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:L/VA:N/SC:H/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X", "version": "4.0", "vulnAvailabilityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "LOW", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "support@hackerone.com", "type": "Secondary"}]}, "published": "2026-08-26T22:16:25.747", "references": [{"source": "support@hackerone.com", "url": "https://www.veeam.com/kb4905"}], "sourceIdentifier": "support@hackerone.com", "vulnStatus": "Received", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-288"}], "source": "support@hackerone.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,13.1)"}}, {"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[0,13.0.2)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "One", "source": "cna", "vendor": "Veeam"}, "product": "one", "vendor": "veeam"}], "created": "2026-08-26T23:30:12.672121+00:00", "title": "Unauthenticated SMB Authentication Coercion in Veeam:One", "updated": "2026-08-26T23:45:03.852746+00:00", "vendors": ["veeam", "veeam$PRODUCT$one"]}