{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2025-62839", "assignerOrgId": "2fd009eb-170a-4625-932b-17a53af1051f", "state": "PUBLISHED", "assignerShortName": "qnap", "dateReserved": "2025-10-24T02:43:45.371Z", "datePublished": "2026-10-29T07:39:53.736Z", "dateUpdated": "2026-10-29T07:39:53.736Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "2fd009eb-170a-4625-932b-17a53af1051f", "shortName": "qnap", "dateUpdated": "2026-10-29T07:39:53.736Z"}, "title": "Hard-coded Cryptographic Key #1", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-321", "description": "CWE-321", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-191", "descriptions": [{"lang": "en", "value": "CAPEC-191"}]}], "affected": [{"vendor": "QNAP Systems Inc.", "product": "HBS 3 Hybrid Backup Sync", "versions": [{"status": "affected", "version": "26.4.x", "lessThan": "26.4.0.521", "versionType": "custom"}], "defaultStatus": "unaffected"}, {"vendor": "QNAP Systems Inc.", "product": "Hybrid Backup Sync", "versions": [{"status": "affected", "version": "26.4.x", "lessThan": "26.4.0.521", "versionType": "custom"}, {"status": "affected", "version": "26.4.x", "lessThan": "26.4.1.563", "versionType": "custom"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "An use of hard-coded cryptographic key vulnerability has been reported to affect HBS 3 Hybrid Backup Sync and Hybrid Backup Sync. If exploited, the vulnerability could allow remote attackers to compromise the security of the system.\n\nWe have already fixed the vulnerability in the following version:\nHBS 3 Hybrid Backup Sync 26.4.0.521 and later\nHybrid Backup Sync 26.4.0.521 and later\nHybrid Backup Sync 26.4.1.563 and later", "supportingMedia": [{"type": "text/html", "base64": false, "value": "An use of hard-coded cryptographic key vulnerability has been reported to affect HBS 3 Hybrid Backup Sync and Hybrid Backup Sync. If exploited, the vulnerability could allow remote attackers to compromise the security of the system.<br><br>We have already fixed the vulnerability in the following version:<br>HBS 3 Hybrid Backup Sync 26.4.0.521 and later<br>Hybrid Backup Sync 26.4.0.521 and later<br>Hybrid Backup Sync 26.4.1.563 and later"}]}], "references": [{"url": "https://www.qnap.com/en/app-release-notes?keyword=HBS%203&app=HybridBackup&product-line=nas", "tags": ["release-notes"]}, {"url": "https://www.qnap.com/en/app-release-notes?keyword=Hybrid&app=HybridBackup&product-line=nas", "tags": ["release-notes"]}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "ADJACENT", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "NONE", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subAvailabilityImpact": "NONE", "exploitMaturity": "NOT_DEFINED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "HIGH", "baseScore": 8.7, "vectorString": "CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}}], "solutions": [{"lang": "en", "value": "We have already fixed the vulnerability in the following version:\nHBS 3 Hybrid Backup Sync 26.4.0.521 and later\nHybrid Backup Sync 26.4.0.521 and later\nHybrid Backup Sync 26.4.1.563 and later", "supportingMedia": [{"type": "text/html", "base64": false, "value": "We have already fixed the vulnerability in the following version:<br>HBS 3 Hybrid Backup Sync 26.4.0.521 and later<br>Hybrid Backup Sync 26.4.0.521 and later<br>Hybrid Backup Sync 26.4.1.563 and later"}]}], "credits": [{"lang": "en", "value": "Team DDOS", "type": "finder"}], "source": {"discovery": "EXTERNAL"}, "x_generator": {"engine": "QNAP PSIRT cve_tool 0.1"}}}}

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{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "HBS 3 Hybrid Backup Sync", "vendor": "QNAP Systems Inc.", "versions": [{"lessThan": "26.4.0.521", "status": "affected", "version": "26.4.x", "versionType": "custom"}]}, {"defaultStatus": "unaffected", "product": "Hybrid Backup Sync", "vendor": "QNAP Systems Inc.", "versions": [{"lessThan": "26.4.0.521", "status": "affected", "version": "26.4.x", "versionType": "custom"}, {"lessThan": "26.4.1.563", "status": "affected", "version": "26.4.x", "versionType": "custom"}]}], "source": "security@qnapsecurity.com.tw"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "An use of hard-coded cryptographic key vulnerability has been reported to affect HBS 3 Hybrid Backup Sync and Hybrid Backup Sync. If exploited, the vulnerability could allow remote attackers to compromise the security of the system.\n\nWe have already fixed the vulnerability in the following version:\nHBS 3 Hybrid Backup Sync 26.4.0.521 and later\nHybrid Backup Sync 26.4.0.521 and later\nHybrid Backup Sync 26.4.1.563 and later"}], "id": "CVE-2025-62839", "lastModified": "2026-10-29T08:17:00.010", "metrics": {"cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "ADJACENT", "availabilityRequirement": "NOT_DEFINED", "baseScore": 8.7, "baseSeverity": "HIGH", "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:A/AC:L/AT:N/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": "2026-10-29T08:16:59.863", "references": [{"source": "security@qnapsecurity.com.tw", "url": "https://www.qnap.com/en/app-release-notes?keyword=HBS%203&app=HybridBackup&product-line=nas"}, {"source": "security@qnapsecurity.com.tw", "url": "https://www.qnap.com/en/app-release-notes?keyword=Hybrid&app=HybridBackup&product-line=nas"}], "sourceIdentifier": "security@qnapsecurity.com.tw", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-321"}], "source": "security@qnapsecurity.com.tw", "type": "Primary"}]}

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