CVE-2026-27444

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.

CVSS v3 7.5 HIGH

7.5^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.9 / Impact : 3.6

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact HIGH

Availability Impact NONE

Scope UNCHANGED

References

Link	Resource
https://downloads.seppmail.com/extrelnotes/150/ERN15.0.html#seppmail-vulnerability-disclosure	Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:seppmail:seppmail:*:*:*:*:*:*:*:*

History

17 Jun 2026, 10:27

Type	Values Removed	Values Added
Summary		(es) SEPPmail Secure Email Gateway antes de la versión 15.0.1 interpreta incorrectamente las direcciones de correo electrónico en los encabezados del correo electrónico, causando un conflicto de interpretación con otra infraestructura de correo que permite a un atacante falsificar el origen del correo electrónico o descifrarlo.

05 Mar 2026, 15:34

Type	Values Removed	Values Added
References	~~() https://downloads.seppmail.com/extrelnotes/150/ERN15.0.html#seppmail-vulnerability-disclosure -~~	() https://downloads.seppmail.com/extrelnotes/150/ERN15.0.html#seppmail-vulnerability-disclosure - Vendor Advisory
CPE		cpe:2.3:a:seppmail:seppmail::::::::
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 7.5
First Time		Seppmail Seppmail seppmail

04 Mar 2026, 09:15

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-03-04 09:15

Updated : 2026-06-17 10:27

NVD link : CVE-2026-27444

Mitre link : CVE-2026-27444

CVE.ORG link : CVE-2026-27444

JSON object : View

Products Affected

seppmail

seppmail

CWE

CWE-436

Interpretation Conflict

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