Description

SEPPmail Secure Email Gateway before version 15.0.3 allows an attacker to hide security tags from users by crafting a long subject.

INFO

Published Date :

2026-04-02T08:42:38.281Z

Last Modified :

2026-04-02T13:31:46.465Z

Source :

NCSC.ch
AFFECTED PRODUCTS

The following products are affected by CVE-2026-29137 vulnerability.

Vendors Products
Seppmail
  • Seppmail Secure Email Gateway
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2026-29137.

URL Resource
https://downloads.seppmail.com/extrelnotes/150/ERN15.0.html#seppmail-vulnerability-disclosure-1503 cve-icon cve-icon
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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