CVE-2026-2743

Arbitrary File Write via Path Traversal upload to Remote Code Execution in SeppMail User Web Interface. The affected feature is the large file transfer (LFT). This issue affects SeppMail: 15.0.2.1 and before

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://downloads.seppmail.com/extrelnotes/150/ERN15.0.html	Release Notes
https://labs.infoguard.ch/advisories/seppmail	Third Party Advisory

Configurations

Configuration 1 (hide)

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

History

09 Mar 2026, 18:31

Type	Values Removed	Values Added
References	~~() https://downloads.seppmail.com/extrelnotes/150/ERN15.0.html -~~	() https://downloads.seppmail.com/extrelnotes/150/ERN15.0.html - Release Notes
References	~~() https://labs.infoguard.ch/advisories/seppmail -~~	() https://labs.infoguard.ch/advisories/seppmail - Third Party Advisory
Summary		(es) Escritura arbitraria de archivos mediante carga por salto de ruta que lleva a ejecución remota de código en la interfaz web de usuario de SeppMail. La característica afectada es la transferencia de archivos grandes (LFT). Este problema afecta a SeppMail: 15.0.2.1 y versiones anteriores.
First Time		Seppmail Seppmail seppmail
CPE		cpe:2.3:a:seppmail:seppmail::::::::
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 9.8

05 Mar 2026, 07:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-03-05 07:16

Updated : 2026-03-09 18:31

NVD link : CVE-2026-2743

Mitre link : CVE-2026-2743

CVE.ORG link : CVE-2026-2743

JSON object : View

Products Affected

seppmail

seppmail

CWE

CWE-22

Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

CWE-434

Unrestricted Upload of File with Dangerous Type

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