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CRITICAL · 9.8

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 a...

Vulnerability 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

CVSS Score

9.8

CRITICAL

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH

Affected Products

VendorProductVersions
SeppmailSeppmail<= 15.0.2.1

Related Weaknesses (CWE)

CWE-22CWE-434

References

FAQ

What is CVE-2026-2743?

CVE-2026-2743 is a vulnerability with a CVSS score of 9.8 (CRITICAL). 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 a...

How severe is CVE-2026-2743?

CVE-2026-2743 has been rated CRITICAL with a CVSS base score of 9.8/10. This is considered a critical vulnerability requiring immediate attention.

Is there a patch for CVE-2026-2743?

Check the references section above for vendor advisories and patch information. Affected products include: Seppmail Seppmail.