{"id":"CVE-2026-80235","aliases":["EUVD-2026-66344","GHSA-7xv4-f5x2-3xqj"],"status":"published","title":"Thinking Software Technology｜EFence - Arbitrary File Upload","description":"EFence developed by Thinking Software Technology has an Arbitrary File Upload vulnerability. Unauthenticated remote attackers can upload and execute web shell backdoors, thereby enabling arbitrary code execution on the server.","severity":{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00895,"percentile":0.5999,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-434"],"published":"2026-08-26T08:26:12Z","modified":"2026-09-03T05:15:19Z","products":[{"vendor":"thinking software","product":"efence"},{"vendor":"thinking software technology","product":"efence"}],"references":[{"url":"https://www.twcert.org.tw/tw/cp-132-11133-e0167-1.html","tags":["third-party-advisory"]},{"url":"https://www.twcert.org.tw/en/cp-139-11137-c6e5f-2.html","tags":["third-party-advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-80235"},{"url":"https://github.com/advisories/GHSA-7xv4-f5x2-3xqj"}],"sources":{"cve":[{"id":"CVE-2026-80235","title":"Thinking Software Technology｜EFence - Arbitrary File Upload","description":"EFence developed by Thinking Software Technology has an Arbitrary File Upload vulnerability. Unauthenticated remote attackers can upload and execute web shell backdoors, thereby enabling arbitrary code execution on the server.","status":"published","published":"2026-08-26T08:26:12.96Z","modified":"2026-08-26T13:57:37.398Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"critical","assessor":"cna"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"cna"}],"cwes":["CWE-434"],"updated_at":"2026-11-02T13:45:36.695039Z"}],"euvd":[{"id":"EUVD-2026-66344","description":"EFence developed by Thinking Software Technology has an Arbitrary File Upload vulnerability. Unauthenticated remote attackers can upload and execute web shell backdoors, thereby enabling arbitrary code execution on the server.","status":"published","published":"2026-08-26T08:26:12Z","modified":"2026-08-26T13:57:37Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","level":"critical"}],"updated_at":"2026-11-02T18:01:31.267984Z"}],"ghsa":[{"id":"GHSA-7xv4-f5x2-3xqj","title":"EFence developed by Thinking Software Technology has an Arbitrary File Upload vulnerability....","description":"EFence developed by Thinking Software Technology has an Arbitrary File Upload vulnerability. Unauthenticated remote attackers can upload and execute web shell backdoors, thereby enabling arbitrary code execution on the server.","status":"published","published":"2026-08-26T18:31:54Z","modified":"2026-08-26T18:32:03Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"critical"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical"}],"cwes":["CWE-434"],"updated_at":"2026-11-02T15:10:59.944342Z"}],"nvd":[{"id":"CVE-2026-80235","description":"EFence developed by Thinking Software Technology has an Arbitrary File Upload vulnerability. Unauthenticated remote attackers can upload and execute web shell backdoors, thereby enabling arbitrary code execution on the server.","status":"published","published":"2026-08-26T09:16:49.027Z","modified":"2026-09-03T05:15:19.85Z","cvss":[{"version":"4.0","score":9.3,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/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/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","level":"critical","assessor":"secondary"},{"version":"3.1","score":9.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"critical","assessor":"secondary"}],"cwes":["CWE-434"],"updated_at":"2026-11-02T14:12:41.66469Z"}]}}