{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-66276", "assignerOrgId": "2fd009eb-170a-4625-932b-17a53af1051f", "state": "PUBLISHED", "assignerShortName": "qnap", "dateReserved": "2025-11-26T09:25:37.832Z", "datePublished": "2026-06-10T01:37:43.269Z", "dateUpdated": "2026-06-10T01:37:43.269Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "QTS", "vendor": "QNAP Systems Inc.", "versions": [{"lessThan": "5.2.7.3256 build 20250913", "status": "affected", "version": "5.2.0", "versionType": "custom"}]}, {"defaultStatus": "unaffected", "product": "QuTS hero", "vendor": "QNAP Systems Inc.", "versions": [{"status": "unaffected", "version": "?"}]}], "cpeApplicability": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:qnap_systems_inc.:qts:*:*:*:*:*:*:*:*", "versionEndIncluding": "5.0.x", "versionStartIncluding": "4.3.x", "vulnerable": true}], "negate": false, "operator": "OR"}], "operator": "OR"}], "credits": [{"lang": "en", "type": "finder", "value": "V\u00edctor A. Morales"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<br>QuTS hero is not affected.<br><br>We have already fixed the vulnerability in the following version:<br>QTS 5.2.7.3256 build 20250913 and later<br>"}], "value": "QuTS hero is not affected.\n\nWe have already fixed the vulnerability in the following version:\nQTS 5.2.7.3256 build 20250913 and later"}], "metrics": [{"cvssV4_0": {"attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "baseScore": 9.2, "baseSeverity": "CRITICAL", "exploitMaturity": "UNREPORTED", "privilegesRequired": "NONE", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "providerMetadata": {"orgId": "2fd009eb-170a-4625-932b-17a53af1051f", "shortName": "qnap", "dateUpdated": "2026-06-10T01:37:43.269Z"}, "references": [{"url": "https://www.qnap.com/en/security-advisory/qsa-25-56"}], "solutions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "We have already fixed the vulnerability in the following version:<br>QTS 5.2.7.3256 build 20250913 and later<br>"}], "value": "We have already fixed the vulnerability in the following version:\nQTS 5.2.7.3256 build 20250913 and later"}], "source": {"advisory": "QSA-25-56", "discovery": "EXTERNAL"}, "title": "QTS", "x_generator": {"engine": "Vulnogram 0.5.0"}}}}

{}

{"cveTags": [], "descriptions": [{"lang": "en", "value": "QuTS hero is not affected.\n\nWe have already fixed the vulnerability in the following version:\nQTS 5.2.7.3256 build 20250913 and later"}], "id": "CVE-2025-66276", "lastModified": "2026-06-10T03:16:24.730", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 9.2, "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": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/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": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "source": "security@qnapsecurity.com.tw", "type": "Secondary"}]}, "published": "2026-06-10T03:16:24.730", "references": [{"source": "security@qnapsecurity.com.tw", "url": "https://www.qnap.com/en/security-advisory/qsa-25-56"}], "sourceIdentifier": "security@qnapsecurity.com.tw", "vulnStatus": "Received"}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[5.2.0,5.2.7.3256 build 20250913)"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "QTS", "source": "cna", "vendor": "QNAP Systems Inc."}, "product": "qts", "vendor": "qnap_systems"}, {"configurations": [{"platform": null, "status": "unaffected", "versions": null}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "QuTS hero", "source": "cna", "vendor": "QNAP Systems Inc."}, "product": "quts_hero", "vendor": "qnap_systems"}], "created": "2026-06-10T04:30:05.948284+00:00", "title": "Critical QNAP QTS Firmware Vulnerability Fixed in 5.2.7.3256", "updated": "2026-06-10T04:30:06.410618+00:00", "vendors": ["qnap_systems", "qnap_systems$PRODUCT$qts", "qnap_systems$PRODUCT$quts_hero"], "weaknesses": ["CWE-94", "CWE-200"]}