Email Forgery Vulnerability in SEPPmail Secure Email Gateway
CVE-2026-29142

6.3MEDIUM

Key Information:

Vendor

Seppmail

Status
Secure Email Gateway
Vendor
CVE Published:
2 April 2026

What is CVE-2026-29142?

The SEPPmail Secure Email Gateway, prior to version 15.0.3, has a vulnerability that permits attackers to forge GINA-encrypted emails. This flaw can potentially undermine the integrity and authenticity of email communications, making it easier for malicious actors to misrepresent themselves. Users of the platform should upgrade to the latest version to safeguard against this security risk.

Affected Version(s)

Secure Email Gateway 0 < 15.0.3

References

https://downloads.seppmail.com/extrelnotes/150/ERN15.0.ht...
release-notes

CVSS V4

Score:
6.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Andris Suter-Dörig
Matteo Scarlata
Kenny Paterson
.