{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-2743","assignerOrgId":"455daabc-a392-441d-aa46-37d35189897c","state":"PUBLISHED","assignerShortName":"NCSC.ch","dateReserved":"2026-02-19T12:28:37.148Z","datePublished":"2026-03-05T06:45:21.753Z","dateUpdated":"2026-05-19T19:44:01.855Z"},"containers":{"cna":{"providerMetadata":{"orgId":"455daabc-a392-441d-aa46-37d35189897c","shortName":"NCSC.ch","dateUpdated":"2026-05-18T16:07:54.920Z"},"title":"SEPPmail User Web Interface Arbitrary File Write to RCE","problemTypes":[{"descriptions":[{"lang":"en","cweId":"CWE-22","description":"CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","type":"CWE"}]},{"descriptions":[{"lang":"en","cweId":"CWE-434","description":"CWE-434 Unrestricted Upload of File with Dangerous Type","type":"CWE"}]}],"impacts":[{"capecId":"CAPEC-242","descriptions":[{"lang":"en","value":"CAPEC-242 Code Injection"}]}],"affected":[{"vendor":"SeppMail","product":"SeppMail","platforms":["Linux"],"modules":["GINA User Web Interface"],"versions":[{"status":"affected","version":"unknown","lessThanOrEqual":"15.0.2.1","versionType":"-"}],"defaultStatus":"unknown"}],"descriptions":[{"lang":"en","value":"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","supportingMedia":[{"type":"text/html","base64":false,"value":"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). <p>This issue affects SeppMail: 15.0.2.1 and before</p>"}]}],"references":[{"url":"https://downloads.seppmail.com/extrelnotes/150/ERN15.0.html"},{"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/"}],"metrics":[{"format":"CVSS","scenarios":[{"lang":"en","value":"GENERAL"}],"cvssV4_0":{"attackVector":"NETWORK","attackComplexity":"LOW","attackRequirements":"NONE","privilegesRequired":"NONE","userInteraction":"NONE","vulnConfidentialityImpact":"HIGH","subConfidentialityImpact":"HIGH","vulnIntegrityImpact":"HIGH","subIntegrityImpact":"HIGH","vulnAvailabilityImpact":"HIGH","subAvailabilityImpact":"HIGH","exploitMaturity":"ATTACKED","Safety":"NOT_DEFINED","Automatable":"YES","Recovery":"NOT_DEFINED","valueDensity":"NOT_DEFINED","vulnerabilityResponseEffort":"NOT_DEFINED","providerUrgency":"NOT_DEFINED","version":"4.0","baseSeverity":"CRITICAL","baseScore":10,"vectorString":"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"}}],"credits":[{"lang":"en","value":"Manuel Feifel and Dario Weiss of InfoGuard Labs","type":"finder"}],"source":{"discovery":"UNKNOWN"},"x_generator":{"engine":"Vulnogram 0.5.0"}},"adp":[{"references":[{"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"]}],"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-05-19T19:43:50.041616Z","id":"CVE-2026-2743","options":[{"Exploitation":"poc"},{"Automatable":"yes"},{"Technical Impact":"total"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-05-19T19:44:01.855Z"}}]}}