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CVE-2026-27444

HIGH CVSS 4.0: 7.8 EPSS 0.04%
Updated Mar 05, 2026
Seppmail
Parameter Value
CVSS 7.8 (HIGH)
Affected Versions before 15.0.1
Fixed In 15.0.1
Type CWE-436
Vendor Seppmail
Public PoC No

SEPPmail Secure Email Gateway before version 15.0.1 incorrectly interprets email addresses in the email headers, causing an interpretation conflict with other mail infrastructure that allows an attacker to fake the source of the email or decrypt it.

Attack Parameters

Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Attack Requirements
None
No additional conditions
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed

Impact Assessment

Confidentiality
None
No data leak
Integrity
Low
Partial data modification
Availability
None
No disruption

CVSS Vector v4.0

Weakness Type (CWE)

Vulnerable Products 1

Configuration From (including) Up to (excluding)
Seppmail Seppmail
cpe:2.3:a:seppmail:seppmail:*:*:*:*:*:*:*:*
15.0.1