{"id":"CVE-2026-41541","state":"PUBLISHED","title":"Symlink creation in qsyncsrv.cgi","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","publishedAt":"2026-10-15T09:30:51.471Z","updatedAt":"2026-10-15T13:45:21.273Z","severity":{"score":5.3,"label":"Medium","version":"4.0","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","source":"qnap"},"assigner":"qnap","products":["QNAP Systems Inc. Qsync Central"],"affected":[{"vendor":"QNAP Systems Inc.","product":"Qsync Central","defaultStatus":"unaffected","versions":[{"version":"5.0.x","status":"affected","lessThan":"5.0.0.7","versionType":"custom"},{"version":"5.1.x","status":"affected","lessThan":"5.1.0.3","versionType":"custom"},{"version":"5.2.x","status":"affected","lessThan":"5.2.0.5","versionType":"custom"},{"version":"5.3.x","status":"affected","lessThan":"5.3.0.2","versionType":"custom"}]}],"references":["https://www.qnap.com/en/app-release-notes?keyword=Qsync%20&app=QsyncServer&product-line=nas"],"weaknesses":["CWE-61"],"ingestedAt":"2026-10-29T20:11:57.932Z","source":{"repository":"CVEProject/cvelistV5","path":"cves/2026/41xxx/CVE-2026-41541.json","commit":"556c9d3a8cd17e218bb8e452ba7cd619a384ff47"},"raw":{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-41541","state":"PUBLISHED","datePublished":"2026-10-15T09:30:51.471Z","dateUpdated":"2026-10-15T13:45:21.273Z","assignerShortName":"qnap","assignerOrgId":"2fd009eb-170a-4625-932b-17a53af1051f","dateReserved":"2026-04-21T03:07:17.288Z"},"containers":{"cna":{"title":"Symlink creation in qsyncsrv.cgi","descriptions":[{"lang":"en","value":"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"}],"affected":[{"vendor":"QNAP Systems Inc.","product":"Qsync Central","defaultStatus":"unaffected","versions":[{"version":"5.0.x","status":"affected","lessThan":"5.0.0.7","versionType":"custom"},{"version":"5.1.x","status":"affected","lessThan":"5.1.0.3","versionType":"custom"},{"version":"5.2.x","status":"affected","lessThan":"5.2.0.5","versionType":"custom"},{"version":"5.3.x","status":"affected","lessThan":"5.3.0.2","versionType":"custom"}]}],"references":[{"url":"https://www.qnap.com/en/app-release-notes?keyword=Qsync%20&app=QsyncServer&product-line=nas","tags":["release-notes"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"LOW","userInteraction":"NONE","vulnConfidentialityImpact":"LOW","subConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW","subIntegrityImpact":"NONE","vulnAvailabilityImpact":"LOW","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":"MEDIUM","baseScore":5.3,"vectorString":"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"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-61","lang":"en","description":"CWE-61","type":"CWE"}]}],"providerMetadata":{"shortName":"qnap","orgId":"2fd009eb-170a-4625-932b-17a53af1051f","dateUpdated":"2026-10-15T09:30:51.471Z"},"impacts":[{"capecId":"CAPEC-132","descriptions":[{"lang":"en","value":"CAPEC-132"}]}],"solutions":[{"lang":"en","value":"We 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","supportingMedia":[{"type":"text/html","base64":false,"value":"We have already fixed the vulnerability in the following version:<br>Qsync Central 5.0.0.7 and later<br>Qsync Central 5.1.0.3 and later<br>Qsync Central 5.2.0.5 and later<br>Qsync Central 5.3.0.2 and later"}]}],"credits":[{"lang":"en","value":"Jun Rong","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":"2026-10-15T13:45:14.208387Z","id":"CVE-2026-41541","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"providerMetadata":{"shortName":"CISA-ADP","orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","dateUpdated":"2026-10-15T13:45:21.273Z"}}]}}}