Description
SEPPmail Secure Email Gateway before version 15.0.3 allows an attacker to hide security tags from users by crafting a long subject.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| SEPPmail | Secure Email Gateway | < 15.0.3 | 15.0.3 |
Medium · 5.3
CVE-2026-29137
EUVD-2026-18154
Long Subject Untagging
Published Apr 2, 2026 · Updated Apr 2, 2026 · Assigned by NCSC.ch