CVE-2026-2748
Medium
Description
SEPPmail Secure Email Gateway before version 15.0.1 improperly validates S/MIME certificates issued for email addresses containing whitespaces, allowing signature spoofing.
SeverityMedium
CVSS5.3
Exploit probability—
ProductSeppmail
PublishedMar 4, 2026
First seenMar 4, 2026
Weakness typeCWE-295CWE-295
How to fix
Update
- seppmail seppmail15.0.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| seppmail seppmail | v < 15.0.1 | 15.0.1 |
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