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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| SEPPmail | SEPPmail Secure Email Gateway (SEG) | < 15.1.1 | 15.1.1 |
Advisories 1
- WID-SEC-2026-4349 SEPPmail Secure E-Mail Gateway: Mehrere Schwachstellen BSI CERT-Bund (WID) · Nov 4, 2026