Sensitive Data Exposure in SEPPmail Secure Email Gateway
CVE-2026-2747

6.9MEDIUM

Key Information:

Vendor

Seppmail

Status
Secure Email Gateway
Vendor
CVE Published:
4 March 2026

What is CVE-2026-2747?

The SEPPmail Secure Email Gateway, prior to version 15.0.1, has a vulnerability that permits the decryption of inline PGP messages without effectively isolating them from the surrounding unencrypted content. This flaw can lead to the unintended exposure of sensitive information, potentially enabling unauthorized access by malicious actors. Users are advised to update to the latest version to safeguard against this issue.

Affected Version(s)

Secure Email Gateway 0 < 15.0.1

References

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

CVSS V4

Score:
6.9
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • Vulnerability published

  • Vulnerability Reserved

Credit

Andris Suter-Dörig
Matteo Scarlata
Kenny Paterson
.