CVE-2026-2743
Path Traversal Arbitrary File Write in SeppMail LFT Leads to RCE
Publication date: 2026-03-05
Last updated on: 2026-03-09
Assigner: Switzerland Government Common Vulnerability Program
Description
Description
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| seppmail | seppmail | to 15.0.2.1 (inc) |
Helpful Resources
Exploitability
| CWE ID | Description |
|---|---|
| CWE-434 | The product allows the upload or transfer of dangerous file types that are automatically processed within its environment. |
| CWE-22 | The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory. |
Attack-Flow Graph
AI Powered Q&A
How can this vulnerability impact me? :
The vulnerability can have severe impacts including unauthorized remote code execution on the affected system. This means attackers can potentially take full control of the system, manipulate files, execute arbitrary commands, and compromise the confidentiality, integrity, and availability of the system and its data.
Can you explain this vulnerability to me?
This vulnerability in SeppMail versions 15.0.2.1 and earlier allows an attacker to perform an arbitrary file write through a path traversal attack during the large file transfer (LFT) feature in the User Web Interface. This can lead to remote code execution, meaning an attacker can run malicious code on the affected system.
How does this vulnerability affect compliance with common standards and regulations (like GDPR, HIPAA)?:
I don't know
How can this vulnerability be detected on my network or system? Can you suggest some commands?
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What immediate steps should I take to mitigate this vulnerability?
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