CVE-2026-2743

CRITICAL EPSS 53.3%
Published Mar 5, 20264mo ago · Modified Jun 17, 20262w ago
10.0 CVSS 4.0
Critical
Find Similar
Published Mar 5, 2026 4mo ago
Last Modified Jun 17, 2026 2w ago

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 Details

Base Score
10.0
Exploitability
—
Impact
—
Vector string
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:X/V:X/RE:X/U:X
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X

Threat Intelligence

EPSS Exploit Probability
53.3% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available

Weaknesses 2

CWE-22 Path Traversal Resource Mgmt
CWE-434 Unrestricted Upload of File with Dangerous Type Resource Mgmt

Affected Products 1

VendorProductVersionRange
seppmailseppmail* ≤15.0.2.1

References 2

  • downloads.seppmail.com https://downloads.seppmail.com/extrelnotes/150/ERN15.0.html
    Release Notes
  • labs.infoguard.ch https://labs.infoguard.ch/posts/seppmail_secure_e-mail_gateway_rce_vulnerabilities_cve-2026-2743_cve-2026-7864_cve-2026-44127_cve-2026-44128/

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.