CVE-2026-29140 — S/MIME Signature Additional Certificate
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 certi…
Published: 2026-04-02 · CVSS: 7.7 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7