CVE-2026-44125: Seppmail AG Secure Email Gateway

Critical severity, CVSS 9.3. EPSS: 0.5% chance of exploitation in the next 30 days.

SEPPmail Secure Email Gateway before version 15.0.4 fails to enforce authorization checks for multiple endpoints in the new GINA UI, allowing unauthenticated remote attackers to access functionality that should require a valid session.

Affected products

• Seppmail AG Secure Email Gateway: before 15.0.4 (fixed in 15.0.4)

Published 2026-05-08. Last modified 2026-06-17.