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vuln-cve/data/2026/2xxx/CVE-2026-2743.json
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{
"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"
},
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"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"
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]
}
],
"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",
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{
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"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/"
}
],
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"format": "CVSS",
"scenarios": [
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"lang": "en",
"value": "GENERAL"
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],
"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": [
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]
}
],
"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"
}
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]
}
}