Vulnerability Details CVE-2026-29143
SEPPmail Secure Email Gateway before version 15.0.3 does not properly authenticate the inner message of S/MIME-encrypted MIME entities, allowing an attacker to control trusted headers.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.001
EPSS Ranking 16.8%
CVSS Severity
CVSS v3 Score 9.1
References
Products affected by CVE-2026-29143
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cpe:2.3:a:seppmail:secure_email_gateway:*