{"id":"CVE-2026-80233","state":"PUBLISHED","title":"CAYIN Technology｜CAYIN CMS-WS/CMS-SE/SMP  - Arbitrary File Upload","description":"CAYIN CMS-WS, CMS-SE, and SMP series products developed by CAYIN Technology have an Arbitrary File Upload vulnerability. 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Privileged remote attackers can upload and execute web shells backdoors, thereby enabling arbitrary code execution on the server."}],"affected":[{"vendor":"CAYIN Technology","product":"CAYIN CMS-WS","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"1.0.25336","versionType":"custom"}]},{"vendor":"CAYIN Technology","product":"CAYIN CMS-SE","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"11.0.25336","versionType":"custom"}]},{"vendor":"CAYIN Technology","product":"CAYIN SMP","defaultStatus":"unaffected","versions":[{"version":"0","status":"affected","lessThanOrEqual":"4.0.25336","versionType":"custom"}]}],"references":[{"url":"https://www.twcert.org.tw/tw/cp-132-11129-4a040-1.html","tags":["third-party-advisory"]},{"url":"https://www.twcert.org.tw/en/cp-139-11135-189f7-2.html","tags":["third-party-advisory"]}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV3_1":{"version":"3.1","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"HIGH","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"HIGH","integrityImpact":"HIGH","availabilityImpact":"HIGH","baseSeverity":"HIGH","baseScore":7.2,"vectorString":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H"}},{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"HIGH","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":8.6,"vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N"}}],"problemTypes":[{"descriptions":[{"cweId":"CWE-434","lang":"en","description":"CWE-434 Unrestricted Upload of File with Dangerous Type","type":"CWE"}]}],"providerMetadata":{"shortName":"twcert","orgId":"cded6c7f-6ce5-4948-8f87-aa7a3bbb6b0e","dateUpdated":"2026-08-26T08:22:47.735Z"},"datePublic":"2026-08-26T08:03:00.000Z","impacts":[{"capecId":"CAPEC-650","descriptions":[{"lang":"en","value":"CAPEC-650 Upload a Web Shell to a Web Server"}]}],"solutions":[{"lang":"en","value":"Update CMS-WS to version 1.0.26198 or later\n\n\n\nUpdate CMS-SE to version 11.0.26198 or later\n\n\n\nUpdate SMP to version 4.0.26198 or later","supportingMedia":[{"type":"text/html","base64":false,"value":"<p>Update CMS-WS to version 1.0.26198 or later</p><p>Update CMS-SE to version 11.0.26198 or later</p><p>Update SMP to version 4.0.26198 or later</p>"}]}],"source":{"advisory":"TVN-202608008","discovery":"EXTERNAL"},"x_generator":{"engine":"TWCERT TVN Workbench"}},"adp":[{"title":"CISA ADP Vulnrichment","metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-08-26T13:58:14.324869Z","id":"CVE-2026-80233","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":"2026-08-26T13:58:21.259Z"}}]}}}