Unrated severityNVD Advisory· Published Mar 4, 2026· Updated Mar 4, 2026
S/MIME Decryption Tag Sanitization Bypass
CVE-2026-27443
Description
SEPPmail Secure Email Gateway before version 15.0.1 does not properly sanitize the headers from S/MIME protected MIME entities, allowing an attacker to control trusted headers.
Affected products
1- SEPPmail/Secure Email Gatewayv5Range: 0
Patches
0No patches discovered yet.
Vulnerability mechanics
AI mechanics synthesis has not run for this CVE yet.
References
1- downloads.seppmail.com/extrelnotes/150/ERN15.0.htmlmitrerelease-notes
News mentions
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