Server Environment Variables Exposed in SEPPmail Secure Email Gateway by SEPPmail
CVE-2026-7864

6.9MEDIUM

Key Information:

Vendor

Seppmail Ag

Status
Secure Email Gateway
Vendor
CVE Published:
8 May 2026

What is CVE-2026-7864?

The SEPPmail Secure Email Gateway prior to version 15.0.4 features an unauthenticated endpoint in the new GINA UI that inadvertently exposes sensitive server environment variables. This vulnerability allows remote attackers to access critical system information, potentially leading to further exploitation of the affected systems.

Affected Version(s)

Secure Email Gateway 0 < 15.0.4

References

https://downloads.seppmail.com/extrelnotes/150/ERN15.0.ht...
https://labs.infoguard.ch/posts/seppmail_secure_e-mail_ga...

EPSS Score

14% chance of being exploited in the next 30 days.

CVSS V4

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

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.