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    "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"
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                "shortName": "NCSC.ch",
                "dateUpdated": "2026-05-18T16:07:54.920Z"
            },
            "title": "SEPPmail User Web Interface Arbitrary File Write to RCE",
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                    "descriptions": [
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                            "lang": "en",
                            "cweId": "CWE-22",
                            "description": "CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')",
                            "type": "CWE"
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                            "lang": "en",
                            "cweId": "CWE-434",
                            "description": "CWE-434 Unrestricted Upload of File with Dangerous Type",
                            "type": "CWE"
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                    ]
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            ],
            "impacts": [
                {
                    "capecId": "CAPEC-242",
                    "descriptions": [
                        {
                            "lang": "en",
                            "value": "CAPEC-242 Code Injection"
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            ],
            "affected": [
                {
                    "vendor": "SeppMail",
                    "product": "SeppMail",
                    "platforms": [
                        "Linux"
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                    "modules": [
                        "GINA User Web Interface"
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                    "versions": [
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                            "status": "affected",
                            "version": "unknown",
                            "lessThanOrEqual": "15.0.2.1",
                            "versionType": "-"
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                    ],
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                    "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",
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                }
            ],
            "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/"
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                        "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"
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            "credits": [
                {
                    "lang": "en",
                    "value": "Manuel Feifel and Dario Weiss of InfoGuard Labs",
                    "type": "finder"
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            ],
            "source": {
                "discovery": "UNKNOWN"
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                        "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/",
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                                "timestamp": "2026-05-19T19:43:50.041616Z",
                                "id": "CVE-2026-2743",
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                                        "Exploitation": "poc"
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                                "role": "CISA Coordinator",
                                "version": "2.0.3"
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                "title": "CISA ADP Vulnrichment",
                "providerMetadata": {
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