CVE-2026-2743

CRITICAL

9.8

Description

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

CVE Details

CVSS v3.1 Score9.8

SeverityCRITICAL

CVSS VectorCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published3/5/2026

Last Modified3/9/2026

Sourcenvd

Honeypot Sightings0

Affected Products

seppmail:seppmail

Weaknesses (CWE)

CWE-22CWE-434CWE-22

References

https://downloads.seppmail.com/extrelnotes/150/ERN15.0.html(vulnerability@ncsc.ch)

https://labs.infoguard.ch/advisories/seppmail(vulnerability@ncsc.ch)

IOC Correlations

No correlations recorded

This product uses data from the NVD API but is not endorsed or certified by the NVD.