{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-39993", "assignerOrgId": "2fd009eb-170a-4625-932b-17a53af1051f", "state": "PUBLISHED", "assignerShortName": "qnap", "dateReserved": "2026-04-08T02:30:26.921Z", "datePublished": "2026-10-15T07:00:00.379Z", "dateUpdated": "2026-10-15T14:48:37.464Z" }, "containers": { "cna": { "providerMetadata": { "orgId": "2fd009eb-170a-4625-932b-17a53af1051f", "shortName": "qnap", "dateUpdated": "2026-10-15T07:57:39.832Z" }, "title": "Path Traversal to Root RCE in QNAP Download Station via Addon/Search addon Parameter", "problemTypes": [ { "descriptions": [ { "lang": "en", "cweId": "CWE-23", "description": "CWE-23", "type": "CWE" } ] } ], "impacts": [ { "capecId": "CAPEC-126", "descriptions": [ { "lang": "en", "value": "CAPEC-126" } ] } ], "affected": [ { "vendor": "QNAP Systems Inc.", "product": "Download Station", "versions": [ { "status": "affected", "version": "5.10.x", "lessThan": "5.10.2.313", "versionType": "custom" }, { "status": "affected", "version": "5.11.x", "lessThan": "5.11.3.322", "versionType": "custom" } ], "defaultStatus": "unaffected" } ], "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", "supportingMedia": [ { "type": "text/html", "base64": false, "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.

We have already fixed the vulnerability in the following version:
Download Station 5.10.2.313 and later
Download Station 5.11.3.322 and later" } ] } ], "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" } } ], "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:
Download Station 5.10.2.313 and later
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": [ { "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" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-10-15T14:48:37.464Z" } } ] } }