CVE-2026-2748

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

CVE-2025-54777

Uncaught exception issue exists in Multiple products in bizhub series. If a malformed file is imported as an S/MIME Email certificate, it may cause a denial-of-service issue that disable the Web Connection feature...

thunderbird: Memory corruption when processing S/MIME messages

A flaw was found in Thunderbird, which is vulnerable to the heap overflow described in CVE-2021-43527 when processing S/MIME messages. Thunderbird versions 91.3.0 and later will not call the vulnerable code when processing S/MIME messages that contain certificates with DER-encoded DSA or RSA-PSS...