{"id":"CVE-2026-80233","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-80233","generatedAt":"2026-10-28T07:03:59.905Z","title":"CAYIN CMS-WS, CMS-SE, and SMP series products developed by CAYIN Technology have an Arbitrary File Upload vulnerability.","description":"CAYIN CMS-WS, CMS-SE, and SMP series products developed by CAYIN Technology have an Arbitrary File Upload vulnerability. Privileged remote attackers can upload and execute web shells backdoors, thereby enabling arbitrary code execution on the server.","published":"2026-08-26T09:16:49.000Z","lastModified":"2026-08-26T16:40:22.000Z","status":"Deferred","sourceIdentifier":"twcert@cert.org.tw","cvss":{"version":"4.0","score":8.6,"severity":"HIGH","vector":"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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/M"},"cwe":["CWE-434"],"affected":[],"epss":{"score":0.0082,"percentile":0.5704,"date":"2026-10-27","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.82%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://www.twcert.org.tw/en/cp-139-11135-189f7-2.html","source":"twcert@cert.org.tw"},{"url":"https://www.twcert.org.tw/tw/cp-132-11129-4a040-1.html","source":"twcert@cert.org.tw"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-80233","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}