{"api_version":"1","generated_at":"2026-10-22T03:10:03+00:00","cve":"CVE-2026-26243","urls":{"html":"https://cve.report/CVE-2026-26243","api":"https://cve.report/api/cve/CVE-2026-26243.json","docs":"https://cve.report/api","cve_org":"https://www.cve.org/CVERecord?id=CVE-2026-26243","nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-26243"},"summary":{"title":"Arbitrary Folder Deletion in Qsync Central 5.0.0.5","description":"A path traversal vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user account, they can then exploit the vulnerability to read the contents of unexpected files or system data.\n\nWe have already fixed the vulnerability in the following version:\nQsync Central 5.0.0.6 and later\nQsync Central 5.1.0.2 and later\nQsync Central 5.2.0.4 and later","state":"PUBLISHED","assigner":"qnap","published_at":"2026-10-15 10:17:12","updated_at":"2026-10-15 16:32:39"},"problem_types":["CWE-22","CWE-22 CWE-22"],"metrics":[{"version":"4.0","source":"security@qnapsecurity.com.tw","type":"Secondary","score":"7.2","severity":"HIGH","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/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","data":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/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","baseScore":7.2,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}},{"version":"4.0","source":"CNA","type":"CVSS","score":"7.2","severity":"HIGH","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N","data":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":7.2,"baseSeverity":"HIGH","exploitMaturity":"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:N/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH","vulnerabilityResponseEffort":"NOT_DEFINED"}}],"references":[{"url":"https://www.qnap.com/en/app-release-notes?keyword=Qsync%20&app=QsyncServer&product-line=nas","name":"https://www.qnap.com/en/app-release-notes?keyword=Qsync%20&app=QsyncServer&product-line=nas","refsource":"security@qnapsecurity.com.tw","tags":[],"title":"","mime":"","httpstatus":"","archivestatus":"0"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-26243","name":"CVE Program record","refsource":"CVE.ORG","tags":["canonical"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-26243","name":"NVD vulnerability detail","refsource":"NVD","tags":["canonical","analysis"]}],"affected":[{"source":"CNA","vendor":"QNAP Systems Inc.","product":"Qsync Central","version":"affected 5.0.x 5.0.0.6 custom","platforms":[]},{"source":"CNA","vendor":"QNAP Systems Inc.","product":"Qsync Central","version":"affected 5.1.x 5.1.0.2 custom","platforms":[]},{"source":"CNA","vendor":"QNAP Systems Inc.","product":"Qsync Central","version":"affected 5.2.x 5.2.0.4 custom","platforms":[]}],"timeline":[],"solutions":[{"source":"CNA","title":"","value":"We have already fixed the vulnerability in the following version:\nQsync Central 5.0.0.6 and later\nQsync Central 5.1.0.2 and later\nQsync Central 5.2.0.4 and later","time":"","lang":"en"}],"workarounds":[],"exploits":[],"credits":[{"source":"CNA","value":"coral","lang":"en"}],"nvd_cpes":[],"vendor_comments":[],"enrichments":{"kev":null,"epss":null,"legacy_qids":[]},"source_records":{"cve_program":{"containers":{"adp":[{"metrics":[{"other":{"content":{"id":"CVE-2026-26243","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","timestamp":"2026-10-15T13:37:20.476589Z","version":"2.0.3"},"type":"ssvc"}}],"providerMetadata":{"dateUpdated":"2026-10-15T13:37:30.842Z","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP"},"title":"CISA ADP Vulnrichment"}],"cna":{"affected":[{"defaultStatus":"unaffected","product":"Qsync Central","vendor":"QNAP Systems Inc.","versions":[{"lessThan":"5.0.0.6","status":"affected","version":"5.0.x","versionType":"custom"},{"lessThan":"5.1.0.2","status":"affected","version":"5.1.x","versionType":"custom"},{"lessThan":"5.2.0.4","status":"affected","version":"5.2.x","versionType":"custom"}]}],"credits":[{"lang":"en","type":"finder","value":"coral"}],"descriptions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"A path traversal vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user account, they can then exploit the vulnerability to read the contents of unexpected files or system data.<br><br>We have already fixed the vulnerability in the following version:<br>Qsync Central 5.0.0.6 and later<br>Qsync Central 5.1.0.2 and later<br>Qsync Central 5.2.0.4 and later"}],"value":"A path traversal vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user account, they can then exploit the vulnerability to read the contents of unexpected files or system data.\n\nWe have already fixed the vulnerability in the following version:\nQsync Central 5.0.0.6 and later\nQsync Central 5.1.0.2 and later\nQsync Central 5.2.0.4 and later"}],"impacts":[{"capecId":"CAPEC-126","descriptions":[{"lang":"en","value":"CAPEC-126"}]}],"metrics":[{"cvssV4_0":{"Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","Safety":"NOT_DEFINED","attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":7.2,"baseSeverity":"HIGH","exploitMaturity":"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:N/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH","vulnerabilityResponseEffort":"NOT_DEFINED"},"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}]}],"problemTypes":[{"descriptions":[{"cweId":"CWE-22","description":"CWE-22","lang":"en","type":"CWE"}]}],"providerMetadata":{"dateUpdated":"2026-10-15T09:29:27.642Z","orgId":"2fd009eb-170a-4625-932b-17a53af1051f","shortName":"qnap"},"references":[{"tags":["release-notes"],"url":"https://www.qnap.com/en/app-release-notes?keyword=Qsync%20&app=QsyncServer&product-line=nas"}],"solutions":[{"lang":"en","supportingMedia":[{"base64":false,"type":"text/html","value":"We have already fixed the vulnerability in the following version:<br>Qsync Central 5.0.0.6 and later<br>Qsync Central 5.1.0.2 and later<br>Qsync Central 5.2.0.4 and later"}],"value":"We have already fixed the vulnerability in the following version:\nQsync Central 5.0.0.6 and later\nQsync Central 5.1.0.2 and later\nQsync Central 5.2.0.4 and later"}],"source":{"discovery":"EXTERNAL"},"title":"Arbitrary Folder Deletion in Qsync Central 5.0.0.5","x_generator":{"engine":"QNAP PSIRT cve_tool 0.1"}}},"cveMetadata":{"assignerOrgId":"2fd009eb-170a-4625-932b-17a53af1051f","assignerShortName":"qnap","cveId":"CVE-2026-26243","datePublished":"2026-10-15T09:29:27.642Z","dateReserved":"2026-02-12T02:21:35.483Z","dateUpdated":"2026-10-15T13:37:30.842Z","state":"PUBLISHED"},"dataType":"CVE_RECORD","dataVersion":"5.2"},"nvd":{"publishedDate":"2026-10-15 10:17:12","lastModifiedDate":"2026-10-15 16:32:39","problem_types":["CWE-22","CWE-22 CWE-22"],"metrics":{"cvssMetricV40":[{"source":"security@qnapsecurity.com.tw","type":"Secondary","cvssData":{"version":"4.0","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/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","baseScore":7.2,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","subAvailabilityImpact":"NONE","exploitMaturity":"NOT_DEFINED","confidentialityRequirement":"NOT_DEFINED","integrityRequirement":"NOT_DEFINED","availabilityRequirement":"NOT_DEFINED","modifiedAttackVector":"NOT_DEFINED","modifiedAttackComplexity":"NOT_DEFINED","modifiedAttackRequirements":"NOT_DEFINED","modifiedPrivilegesRequired":"NOT_DEFINED","modifiedUserInteraction":"NOT_DEFINED","modifiedVulnConfidentialityImpact":"NOT_DEFINED","modifiedVulnIntegrityImpact":"NOT_DEFINED","modifiedVulnAvailabilityImpact":"NOT_DEFINED","modifiedSubConfidentialityImpact":"NOT_DEFINED","modifiedSubIntegrityImpact":"NOT_DEFINED","modifiedSubAvailabilityImpact":"NOT_DEFINED","Safety":"NOT_DEFINED","Automatable":"NOT_DEFINED","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED"}}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2026-10-15T13:37:20.476589Z","id":"CVE-2026-26243","options":[{"exploitation":"none"},{"automatable":"no"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"configurations":[]},"legacy_mitre":{"record":{"CveYear":"2026","CveId":"26243","Ordinal":"1","Title":"Arbitrary Folder Deletion in Qsync Central 5.0.0.5","CVE":"CVE-2026-26243","Year":"2026"},"notes":[{"CveYear":"2026","CveId":"26243","Ordinal":"1","NoteData":"A path traversal vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user account, they can then exploit the vulnerability to read the contents of unexpected files or system data.\n\nWe have already fixed the vulnerability in the following version:\nQsync Central 5.0.0.6 and later\nQsync Central 5.1.0.2 and later\nQsync Central 5.2.0.4 and later","Type":"Description","Title":"Arbitrary Folder Deletion in Qsync Central 5.0.0.5"}]}}}