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.

INFO

Published Date :

2026-03-04T08:45:23.130Z

Last Modified :

2026-03-04T19:41:41.356Z

Source :

NCSC.ch
AFFECTED PRODUCTS

The following products are affected by CVE-2026-27443 vulnerability.

Vendors Products
Seppmail
  • Seppmail
  • Seppmail Secure Email Gateway
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-27443.

URL Resource
https://downloads.seppmail.com/extrelnotes/150/ERN15.0.html#seppmail-vulnerability-disclosure cve-icon cve-icon
Login to claim this CVE

CVSS Vulnerability Scoring System

Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Attack Requirements
Privileges Required
User Interaction
VS Confidentiality
VS Integrity
VS Availability
SS Confidentiality
SS Integrity
SS Availability
Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact