{"id":"CVE-2026-39993","state":"PUBLISHED","title":"Path Traversal to Root RCE in QNAP Download Station via Addon/Search addon Parameter","description":"A relative path traversal vulnerability has been reported to affect Download Station. 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:\nDownload Station 5.10.2.313 and later\nDownload Station 5.11.3.322 and later","publishedAt":"2026-10-15T07:00:00.379Z","updatedAt":"2026-10-15T14:48:37.464Z","severity":{"score":8.7,"label":"High","version":"4.0","vector":"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","source":"qnap"},"assigner":"qnap","products":["QNAP Systems Inc. Download Station"],"affected":[{"vendor":"QNAP Systems Inc.","product":"Download Station","defaultStatus":"unaffected","versions":[{"version":"5.10.x","status":"affected","lessThan":"5.10.2.313","versionType":"custom"},{"version":"5.11.x","status":"affected","lessThan":"5.11.3.322","versionType":"custom"}]}],"references":["https://www.qnap.com/en/app_releasenotes/list.php?app_choose=DownloadStation"],"weaknesses":["CWE-23"],"ingestedAt":"2026-10-29T20:11:50.837Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/39xxx/CVE-2026-39993.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-39993","state":"PUBLISHED","datePublished":"2026-10-15T07:00:00.379Z","dateUpdated":"2026-10-15T14:48:37.464Z","assignerShortName":"qnap","assignerOrgId":"2fd009eb-170a-4625-932b-17a53af1051f","dateReserved":"2026-04-08T02:30:26.921Z"},"containers":{"cna":{"title":"Path Traversal to Root RCE in QNAP Download Station via Addon/Search addon Parameter","descriptions":[{"lang":"en","value":"A relative path traversal vulnerability has been reported to affect Download Station. 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:\nDownload Station 5.10.2.313 and later\nDownload Station 5.11.3.322 and later"}],"affected":[{"vendor":"QNAP Systems Inc.","product":"Download Station","defaultStatus":"unaffected","versions":[{"version":"5.10.x","status":"affected","lessThan":"5.10.2.313","versionType":"custom"},{"version":"5.11.x","status":"affected","lessThan":"5.11.3.322","versionType":"custom"}]}],"references":[{"url":"https://www.qnap.com/en/app_releasenotes/list.php?app_choose=DownloadStation","tags":["release-notes"]}],"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":"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:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-23","lang":"en","description":"CWE-23","type":"CWE"}]}],"providerMetadata":{"shortName":"qnap","orgId":"2fd009eb-170a-4625-932b-17a53af1051f","dateUpdated":"2026-10-15T07:57:39.832Z"},"impacts":[{"capecId":"CAPEC-126","descriptions":[{"lang":"en","value":"CAPEC-126"}]}],"solutions":[{"lang":"en","value":"We have already fixed the vulnerability in the following version:\nDownload Station 5.10.2.313 and later\nDownload Station 5.11.3.322 and later","supportingMedia":[{"type":"text/html","base64":false,"value":"We have already fixed the vulnerability in the following version:<br>Download Station 5.10.2.313 and later<br>Download Station 5.11.3.322 and later"}]}],"credits":[{"lang":"en","value":"Joey Tang","type":"finder"}],"source":{"discovery":"EXTERNAL"},"x_generator":{"engine":"QNAP PSIRT cve_tool 0.1"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-10-15T14:48:28.494394Z","id":"CVE-2026-39993","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-15T14:48:37.464Z"}}]}}}