CVE-2026-26239

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-26239", "assignerOrgId": "2fd009eb-170a-4625-932b-17a53af1051f", "state": "PUBLISHED", "assignerShortName": "qnap", "dateReserved": "2026-02-12T02:21:35.483Z", "datePublished": "2026-06-10T03:15:18.196Z", "dateUpdated": "2026-06-17T01:47:04.260Z"}, "containers": {"cna": {"providerMetadata": {"orgId": "2fd009eb-170a-4625-932b-17a53af1051f", "shortName": "qnap", "dateUpdated": "2026-06-17T01:47:04.260Z"}, "title": "File Station 5", "problemTypes": [{"descriptions": [{"lang": "en", "cweId": "CWE-121", "description": "CWE-121", "type": "CWE"}]}], "impacts": [{"capecId": "CAPEC-47", "descriptions": [{"lang": "en", "value": "CAPEC-47"}]}], "affected": [{"vendor": "QNAP Systems Inc.", "product": "File Station 5", "versions": [{"status": "affected", "version": "5.5.0", "lessThan": "5.5.6.5208", "versionType": "custom"}], "defaultStatus": "unaffected"}], "descriptions": [{"lang": "en", "value": "A buffer overflow vulnerability has been reported to affect File Station 5. If a remote attacker gains a user account, they can then exploit the vulnerability to modify memory or crash processes.\n\nWe have already fixed the vulnerability in the following version:\nFile Station 5 5.5.6.5208 and later", "supportingMedia": [{"type": "text/html", "base64": false, "value": "A buffer overflow vulnerability has been reported to affect File Station 5. If a remote attacker gains a user account, they can then exploit the vulnerability to modify memory or crash processes.<br><br>We have already fixed the vulnerability in the following version:<br>File Station 5 5.5.6.5208 and later<br>"}]}], "references": [{"url": "https://www.qnap.com/en/security-advisory/qsa-26-10"}], "metrics": [{"format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}], "cvssV4_0": {"attackVector": "NETWORK", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "userInteraction": "NONE", "vulnConfidentialityImpact": "HIGH", "subConfidentialityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "subIntegrityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subAvailabilityImpact": "NONE", "exploitMaturity": "UNREPORTED", "Safety": "NOT_DEFINED", "Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "valueDensity": "NOT_DEFINED", "vulnerabilityResponseEffort": "NOT_DEFINED", "providerUrgency": "NOT_DEFINED", "version": "4.0", "baseSeverity": "MEDIUM", "baseScore": 6.3, "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U"}}], "solutions": [{"lang": "en", "value": "We have already fixed the vulnerability in the following version:\nFile Station 5 5.5.6.5208 and later", "supportingMedia": [{"type": "text/html", "base64": false, "value": "We have already fixed the vulnerability in the following version:<br>File Station 5 5.5.6.5208 and later<br>"}]}], "credits": [{"lang": "en", "value": "Moritz Abrell, SySS GmbH", "type": "finder"}], "source": {"advisory": "QSA-26-37", "discovery": "EXTERNAL"}, "x_generator": {"engine": "Vulnogram 0.1.0-dev"}}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-06-10T15:10:18.381806Z", "id": "CVE-2026-26239", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-10T15:14:02.745Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-26239", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "total"}], "version": "2.0.3", "timestamp": "2026-06-10T15:10:18.381806Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-06-10T15:11:08.515Z"}}], "cna": {"title": "File Station 5", "source": {"advisory": "QSA-26-37", "discovery": "EXTERNAL"}, "credits": [{"lang": "en", "type": "finder", "value": "Moritz Abrell, SySS GmbH"}], "impacts": [{"capecId": "CAPEC-47", "descriptions": [{"lang": "en", "value": "CAPEC-47"}]}], "metrics": [{"format": "CVSS", "cvssV4_0": {"Safety": "NOT_DEFINED", "version": "4.0", "Recovery": "NOT_DEFINED", "baseScore": 6.3, "Automatable": "NOT_DEFINED", "attackVector": "NETWORK", "baseSeverity": "MEDIUM", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U", "exploitMaturity": "UNREPORTED", "providerUrgency": "NOT_DEFINED", "userInteraction": "NONE", "attackComplexity": "LOW", "attackRequirements": "NONE", "privilegesRequired": "LOW", "subIntegrityImpact": "NONE", "vulnIntegrityImpact": "HIGH", "subAvailabilityImpact": "NONE", "vulnAvailabilityImpact": "HIGH", "subConfidentialityImpact": "NONE", "vulnConfidentialityImpact": "HIGH", "vulnerabilityResponseEffort": "NOT_DEFINED"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"vendor": "QNAP Systems Inc.", "product": "File Station 5", "versions": [{"status": "affected", "version": "5.5.0", "lessThan": "5.5.6.5208", "versionType": "custom"}], "defaultStatus": "unaffected"}], "solutions": [{"lang": "en", "value": "We have already fixed the vulnerability in the following version:\nFile Station 5 5.5.6.5208 and later", "supportingMedia": [{"type": "text/html", "value": "We have already fixed the vulnerability in the following version:<br>File Station 5 5.5.6.5208 and later<br>", "base64": false}]}], "references": [{"url": "https://www.qnap.com/en/security-advisory/qsa-26-10"}], "x_generator": {"engine": "Vulnogram 0.1.0-dev"}, "descriptions": [{"lang": "en", "value": "A buffer overflow vulnerability has been reported to affect File Station 5. If a remote attacker gains a user account, they can then exploit the vulnerability to modify memory or crash processes.\n\nWe have already fixed the vulnerability in the following version:\nFile Station 5 5.5.6.5208 and later", "supportingMedia": [{"type": "text/html", "value": "A buffer overflow vulnerability has been reported to affect File Station 5. If a remote attacker gains a user account, they can then exploit the vulnerability to modify memory or crash processes.<br><br>We have already fixed the vulnerability in the following version:<br>File Station 5 5.5.6.5208 and later<br>", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-121", "description": "CWE-121"}]}], "providerMetadata": {"orgId": "2fd009eb-170a-4625-932b-17a53af1051f", "shortName": "qnap", "dateUpdated": "2026-06-17T01:47:04.260Z"}}}, "cveMetadata": {"cveId": "CVE-2026-26239", "state": "PUBLISHED", "dateUpdated": "2026-06-17T01:47:04.260Z", "dateReserved": "2026-02-12T02:21:35.483Z", "assignerOrgId": "2fd009eb-170a-4625-932b-17a53af1051f", "datePublished": "2026-06-10T03:15:18.196Z", "assignerShortName": "qnap"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "product": "File Station 5", "vendor": "QNAP Systems Inc.", "versions": [{"lessThan": "5.5.6.5208", "status": "affected", "version": "5.5.0", "versionType": "custom"}]}], "source": "security@qnapsecurity.com.tw"}], "configurations": [{"nodes": [{"cpeMatch": [{"criteria": "cpe:2.3:a:qnap:file_station:*:*:*:*:*:*:*:*", "matchCriteriaId": "C0E422FA-4EF8-4714-AFAF-E7143DBFA2CE", "versionEndExcluding": "5.5.6.5208", "versionStartIncluding": "5.5.6.4691", "vulnerable": true}], "negate": false, "operator": "OR"}]}], "cveTags": [], "descriptions": [{"lang": "en", "value": "A buffer overflow vulnerability has been reported to affect File Station 5. If a remote attacker gains a user account, they can then exploit the vulnerability to modify memory or crash processes.\n\nWe have already fixed the vulnerability in the following version:\nFile Station 5 5.5.6.5208 and later"}, {"lang": "es", "value": "Se ha reportado una vulnerabilidad de desbordamiento de b\u00fafer que afecta a File Station 5. Si un atacante remoto obtiene una cuenta de usuario, puede entonces explotar la vulnerabilidad para modificar la memoria o bloquear procesos.\n\nYa hemos corregido la vulnerabilidad en la siguiente versi\u00f3n:\nFile Station 5 5.5.6.5208 y posteriores"}], "id": "CVE-2026-26239", "lastModified": "2026-07-23T09:10:00.113", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 8.1, "baseSeverity": "HIGH", "confidentialityImpact": "NONE", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 2.8, "impactScore": 5.2, "source": "nvd@nist.gov", "type": "Primary"}], "cvssMetricV40": [{"cvssData": {"Automatable": "NOT_DEFINED", "Recovery": "NOT_DEFINED", "Safety": "NOT_DEFINED", "attackComplexity": "LOW", "attackRequirements": "NONE", "attackVector": "NETWORK", "availabilityRequirement": "NOT_DEFINED", "baseScore": 6.3, "baseSeverity": "MEDIUM", "confidentialityRequirement": "NOT_DEFINED", "exploitMaturity": "UNREPORTED", "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": "LOW", "providerUrgency": "NOT_DEFINED", "subAvailabilityImpact": "NONE", "subConfidentialityImpact": "NONE", "subIntegrityImpact": "NONE", "userInteraction": "NONE", "valueDensity": "NOT_DEFINED", "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/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"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-26239", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-06-10T15:10:18.381806Z", "version": "2.0.3"}}]}, "published": "2026-06-10T04:17:21.290", "references": [{"source": "security@qnapsecurity.com.tw", "url": "https://www.qnap.com/en/security-advisory/qsa-26-10"}], "sourceIdentifier": "security@qnapsecurity.com.tw", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-121"}], "source": "security@qnapsecurity.com.tw", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": null, "status": "affected", "versions": {"scheme": "generic", "value": "[5.5.0,5.5.6.5208)"}}], "enrichment": {"confidence": 95.0, "confidence_source": "inferred", "scores": [{"score": 95.0, "source": "inferred"}, {"score": 100.0, "source": "matching"}]}, "original": {"product": "File Station 5", "source": "cna", "vendor": "QNAP Systems Inc."}, "product": "file_station_5", "vendor": "qnap_systems"}], "created": "2026-06-10T04:30:05.945627+00:00", "title": "Buffer Overflow in QNAP File Station 5 Allows Memory Corruption", "updated": "2026-06-17T20:45:03.059600+00:00", "vendors": ["qnap_systems", "qnap_systems$PRODUCT$file_station_5"]}