Vulnerability Details CVE-2026-29140
SEPPmail Secure Email Gateway before version 15.0.3 allows an attacker to cause attacker-controlled certificates to be used for future encryption to a victim by adding the certificates to S/MIME signatures.
Exploit prediction scoring system (EPSS) score
EPSS Score 0.0
EPSS Ranking 5.6%
CVSS Severity
CVSS v3 Score 5.3
References
Products affected by CVE-2026-29140
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cpe:2.3:a:seppmail:secure_email_gateway:*