{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-66277", "assignerOrgId": "2fd009eb-170a-4625-932b-17a53af1051f", "state": "PUBLISHED", "assignerShortName": "qnap", "dateReserved": "2025-11-26T09:25:37.832Z", "datePublished": "2026-02-11T12:15:43.851Z", "dateUpdated": "2026-02-11T12:15:43.851Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "product": "QTS", "vendor": "QNAP Systems Inc.", "versions": [{"lessThan": "5.2.8.3350 build 20251216", "status": "affected", "version": "5.2.x", "versionType": "custom"}]}, {"defaultStatus": "unaffected", "product": "QuTS hero", "vendor": "QNAP Systems Inc.", "versions": [{"lessThan": "h5.3.2.3354 build 20251225", "status": "affected", "version": "h5.3.x", "versionType": "custom"}, {"lessThan": "h5.2.8.3350 build 20251216", "status": "affected", "version": "h5.2.x", "versionType": "custom"}]}], "credits": [{"lang": "en", "type": "finder", "value": "coral"}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "A link following vulnerability has been reported to affect several QNAP operating system versions. The remote attackers can then exploit the vulnerability to traverse the file system to unintended locations.<br><br>We have already fixed the vulnerability in the following versions:<br>QTS 5.2.8.3350 build 20251216 and later<br>QuTS hero h5.3.2.3354 build 20251225 and later<br>QuTS hero h5.2.8.3350 build 20251216 and later<br>"}], "value": "A link following vulnerability has been reported to affect several QNAP operating system versions. The remote attackers can then exploit the vulnerability to traverse the file system to unintended locations.\n\nWe have already fixed the vulnerability in the following versions:\nQTS 5.2.8.3350 build 20251216 and later\nQuTS hero h5.3.2.3354 build 20251225 and later\nQuTS hero h5.2.8.3350 build 20251216 and later"}], "impacts": [{"capecId": "CAPEC-132", "descriptions": [{"lang": "en", "value": "CAPEC-132"}]}], "metrics": [{"cvssV4_0": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "PRESENT", "attackVector": "NETWORK", "baseScore": 9.2, "baseSeverity": "CRITICAL", "exploitMaturity": "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", "version": "4.0", "vulnAvailabilityImpact": "HIGH", "vulnConfidentialityImpact": "HIGH", "vulnIntegrityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-59", "description": "CWE-59", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "2fd009eb-170a-4625-932b-17a53af1051f", "shortName": "qnap", "dateUpdated": "2026-02-11T12:15:43.851Z"}, "references": [{"url": "https://www.qnap.com/en/security-advisory/qsa-26-05"}], "solutions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "We have already fixed the vulnerability in the following versions:<br>QTS 5.2.8.3350 build 20251216 and later<br>QuTS hero h5.3.2.3354 build 20251225 and later<br>QuTS hero h5.2.8.3350 build 20251216 and later<br>"}], "value": "We have already fixed the vulnerability in the following versions:\nQTS 5.2.8.3350 build 20251216 and later\nQuTS hero h5.3.2.3354 build 20251225 and later\nQuTS hero h5.2.8.3350 build 20251216 and later"}], "source": {"advisory": "QSA-26-05", "discovery": "EXTERNAL"}, "title": "QTS, QuTS hero", "x_generator": {"engine": "Vulnogram 0.1.0-dev"}}}}

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{"cveTags": [], "descriptions": [{"lang": "en", "value": "A link following vulnerability has been reported to affect several QNAP operating system versions. The remote attackers can then exploit the vulnerability to traverse the file system to unintended locations.\n\nWe have already fixed the vulnerability in the following versions:\nQTS 5.2.8.3350 build 20251216 and later\nQuTS hero h5.3.2.3354 build 20251225 and later\nQuTS hero h5.2.8.3350 build 20251216 and later"}], "id": "CVE-2025-66277", "lastModified": "2026-02-11T15:27:26.370", "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": "2026-02-11T13:15:58.380", "references": [{"source": "security@qnapsecurity.com.tw", "url": "https://www.qnap.com/en/security-advisory/qsa-26-05"}], "sourceIdentifier": "security@qnapsecurity.com.tw", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-59"}], "source": "security@qnapsecurity.com.tw", "type": "Primary"}]}

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