{"schemaVersion":3,"id":"CVE-2026-41541","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"An unix symbolic link (symlink) following vulnerability has been reported to affect Qsync Central. If a remote attacker gains a user account, they can then exploit the vulnerability to compromise the security of the system.\n\nWe have already fixed the vulnerability in the following version:\nQsync Central 5.0.0.7 and later\nQsync Central 5.1.0.3 and later\nQsync Central 5.2.0.5 and later\nQsync Central 5.3.0.2 and later","dates":{"published":"2026-10-15T09:30:51.471Z","modified":"2026-10-15T13:45:21.273Z","reserved":null,"kevAdded":[],"kevDue":[]},"cvss":{"headline":{"score":5.3,"severity":"medium","version":"4.0","versionLabel":"v4.0","source":"CVE.org","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N","computed":false,"selection":"backend-summary"},"metrics":[{"version":"4.0","versionLabel":"v4.0","source":"CVE.org","score":5.3,"severity":"medium","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N","exploitability":null,"impact":null,"computed":false},{"version":"4.0","versionLabel":"v4.0","source":"NVD","score":5.3,"severity":"medium","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/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","exploitability":null,"impact":null,"computed":false}]},"epss":{"probability":0.00541,"percentile":0.44418,"severity":"low","asOf":"2026-10-20T00:00:00.000Z","change":{"pp":null,"baselineDate":null,"baselineScore":null},"history":[{"date":"2026-10-15T00:00:00.000Z","score":0.00541,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00541,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00541,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00541,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00541,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00541,"percentile":0.44418}],"last30":[{"date":"2026-10-15T00:00:00.000Z","score":0.00541,"percentile":null},{"date":"2026-10-16T00:00:00.000Z","score":0.00541,"percentile":null},{"date":"2026-10-17T00:00:00.000Z","score":0.00541,"percentile":null},{"date":"2026-10-18T00:00:00.000Z","score":0.00541,"percentile":null},{"date":"2026-10-19T00:00:00.000Z","score":0.00541,"percentile":null},{"date":"2026-10-20T00:00:00.000Z","score":0.00541,"percentile":0.44418}]},"kev":{"state":"not-listed","entries":[],"listedCount":0,"totalCatalogs":3,"catalogs":[{"source":"cisa","label":"CISA","listed":false,"entry":null},{"source":"enisa","label":"ENISA","listed":false,"entry":null},{"source":"circl","label":"CIRCL","listed":false,"entry":null}]},"ransomware":{"state":"none-recorded","sources":[]},"exploits":[],"exploitCount":0,"weaknesses":[{"id":"CWE-61","name":"UNIX Symbolic Link (Symlink) Following","description":"The product, when opening a file or directory, does not sufficiently account for when the file is a symbolic link that resolves to a target outside of the intended control sphere. This could allow an attacker to cause the product to operate on unauthorized files.","type":"weakness","status":"Incomplete","abstraction":"Compound","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/61.html"}],"affected":[{"vendor":"qnap systems inc.","product":"qsync central","name":"Qsync Central","label":"qsync central","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"≥ 5.0.x, < 5.0.0.7","noFixRecorded":false,"fixedIn":null},{"text":"≥ 5.1.x, < 5.1.0.3","noFixRecorded":false,"fixedIn":null},{"text":"≥ 5.2.x, < 5.2.0.5","noFixRecorded":false,"fixedIn":null},{"text":"≥ 5.3.x, < 5.3.0.2","noFixRecorded":false,"fixedIn":null}],"versionsText":"≥ 5.0.x, < 5.0.0.7 | ≥ 5.1.x, < 5.1.0.3 | ≥ 5.2.x, < 5.2.0.5 | ≥ 5.3.x, < 5.3.0.2","eol":null,"hubHref":"/vendor/qnap_systems_inc/qsync_central"}],"affectedCount":1,"eol":{"hasEol":false,"count":0},"references":[{"url":"https://www.qnap.com/en/app-release-notes?keyword=Qsync%20&app=QsyncServer&product-line=nas","label":"www.qnap.com/en/app-release-notes?keyword=Qsync%20&app=QsyncServer&product-line=nas","hostname":"www.qnap.com","tags":["Release Notes"]}],"lineage":{"upstream":[],"downstream":[],"duplicates":[],"related":[]},"timeline":[{"kind":"published","date":"2026-10-15T09:30:51.471Z","label":"Published","detail":"Vulnerability first disclosed.","source":null},{"kind":"modified","date":"2026-10-15T13:45:21.273Z","label":"Last modified","detail":"Vulnerability information updated.","source":null}],"risk":{"score":21,"level":"low","profile":"Default","thresholds":{"critical":75,"high":50,"medium":25,"low":10}},"meta":{"dataAsOf":"2026-10-21T03:43:26.016Z","stale":false,"partial":false}}