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CVE PROGRAM SOURCE RECORD7.8 High

CVE-2026-2748

S/MIME Certificate Subject Whitespace

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Status
Published
Published
Updated
Assigning organization
NCSC.ch

Description

SEPPmail Secure Email Gateway before version 15.0.1 improperly validates S/MIME certificates issued for email addresses containing whitespaces, allowing signature spoofing.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

SEPPmail Secure Email Gateway

Default version status: unaffected

  • 0 to < 15.0.1affected

References