CVE-2026-2743

9.8 CRITICAL

Published: March 05, 2026 Modified: March 09, 2026

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

AI Explanation

Get an AI-powered plain-language explanation of this vulnerability and remediation steps.

CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

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

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

https://downloads.seppmail.com/extrelnotes/150/ERN15.0.html

Source: vulnerability@ncsc.ch

Release Notes

https://labs.infoguard.ch/advisories/seppmail

Source: vulnerability@ncsc.ch

Third Party Advisory

2 reference(s) from NVD

Quick Stats

CVSS v3 Score

9.8 / 10.0

EPSS (Exploit Probability)

0.5%

67th percentile

Exploitation Status

Not in CISA KEV

Weaknesses (CWE)

CWE-22 CWE-434 CWE-22

Affected Vendors

seppmail

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