{"id":"CVE-2026-2743","aliases":["EUVD-2026-9794","GHSA-3hq3-ff7h-6mf5"],"status":"published","title":"SEPPmail User Web Interface Arbitrary File Write to RCE","description":"Arbitrary File Write via Path Traversal upload to Remote Code Execution in SeppMail User Web Interface. The affected feature is the large file transfer (LFT). \n\nThis issue affects SeppMail: 15.0.2.1 and before","severity":{"version":"4.0","score":10,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/AU:Y","level":"critical","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00948,"percentile":0.6148,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-22","CWE-434"],"published":"2026-03-05T06:45:21Z","modified":"2026-06-17T10:31:38Z","products":[{"vendor":"seppmail","product":"seppmail"}],"references":[{"url":"https://downloads.seppmail.com/extrelnotes/150/ERN15.0.html","tags":["Release Notes"]},{"url":"https://labs.infoguard.ch/posts/seppmail_secure_e-mail_gateway_rce_vulnerabilities_cve-2026-2743_cve-2026-7864_cve-2026-44127_cve-2026-44128/","tags":["exploit"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-2743"},{"url":"https://labs.infoguard.ch/advisories/seppmail"},{"url":"https://labs.infoguard.ch/posts/seppmail_secure_e-mail_gateway_rce_vulnerabilities_cve-2026-2743_cve-2026-7864_cve-2026-44127_cve-2026-44128"},{"url":"https://github.com/advisories/GHSA-3hq3-ff7h-6mf5"}],"sources":{"cve":[{"id":"CVE-2026-2743","title":"SEPPmail User Web Interface Arbitrary File Write to RCE","description":"Arbitrary File Write via Path Traversal upload to Remote Code Execution in SeppMail User Web Interface. The affected feature is the large file transfer (LFT). \n\nThis issue affects SeppMail: 15.0.2.1 and before","status":"published","published":"2026-03-05T06:45:21.753Z","modified":"2026-05-19T19:44:01.855Z","cvss":[{"version":"4.0","score":10,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/AU:Y","level":"critical","assessor":"cna"}],"cwes":["CWE-22","CWE-434"],"updated_at":"2026-11-02T13:48:35.749498Z"}],"euvd":[{"id":"EUVD-2026-9794","description":"Arbitrary File Write via Path Traversal upload to Remote Code Execution in SeppMail User Web Interface. The affected feature is the large file transfer (LFT). \n\nThis issue affects SeppMail: 15.0.2.1 and before","status":"published","published":"2026-03-05T06:45:21Z","modified":"2026-05-19T19:44:01Z","cvss":[{"version":"4.0","score":10,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/AU:Y","level":"critical"}],"updated_at":"2026-11-02T18:21:15.217097Z"}],"ghsa":[{"id":"GHSA-3hq3-ff7h-6mf5","title":"Arbitrary File Write via Path Traversal upload to Remote Code Execution in SeppMail User Web...","description":"Arbitrary File Write via Path Traversal upload to Remote Code Execution in SeppMail User Web Interface. The affected feature is the large file transfer (LFT). This issue affects SeppMail: 15.0.2.1 and before","status":"published","published":"2026-03-05T09:30:33Z","modified":"2026-05-18T18:32:28Z","cvss":[{"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"},{"version":"4.0","score":10,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/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:Y/R:X/V:X/RE:X/U:X","level":"critical"}],"cwes":["CWE-22"],"updated_at":"2026-11-02T15:08:12.004262Z"}],"nvd":[{"id":"CVE-2026-2743","description":"Arbitrary File Write via Path Traversal upload to Remote Code Execution in SeppMail User Web Interface. The affected feature is the large file transfer (LFT). \n\nThis issue affects SeppMail: 15.0.2.1 and before","status":"published","published":"2026-03-05T07:16:14.67Z","modified":"2026-06-17T10:31:38.537Z","cvss":[{"version":"4.0","score":10,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/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:Y/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":"primary"}],"cwes":["CWE-22","CWE-434"],"updated_at":"2026-11-02T14:12:07.852448Z"}]}}