[ CVE-2026-114426 · Published 4 Nov 2026 ]

Vulnerability in SEPPmail AG SEPPmail Secure Email Gateway (SEG)

CVSS 8.7 EPSS <1%No fix listed yet

[ Description ]Official description

SEPPmail Secure Email Gateway before 15.1.1 processes and writes v1 file-interface upload data before authenticating the caller and without an absolute request-size limit. An unauthenticated remote attacker can occupy workers and consume temporary storage with concurrent or slow requests, causing service unavailability.

[ Fixes ]Fixes and patches

No fix or interim patch is linked from our sources yet. Check the vendor references below and limit exposure of affected systems until a fix is available.