Security Advisory

CVE-2026-29140

CVE vulnerability detail — eXtreme Datacenter Security Operations

Published 2026-04-02 08:27:52

Last updated 2026-04-02 14:48:53

Assigner NCSC.ch

State PUBLISHED

Description

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.

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