CVE-2026-109681
Received
Received - Intake
FTP Client PASV Mode IP Spoofing Vulnerability
Vulnerability report for CVE-2026-109681, including description, CVSS score, EPSS score, affected products, exploitability, helpful resources, and attack-flow context.
Publication date: 2026-10-21
Last updated on: 2026-10-21
Assigner: Rapid7, Inc.
Description
Description
The FTP client trusts the server's PASV response IP:port without validation against the control connection target. A rogue FTP server can specify any IP:port in the 227 Passive Mode response, causing the operator's machine to open a TCP connection to an arbitrary host.
CVSS Scores
EPSS Scores
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Meta Information
Affected Vendors & Products
| Vendor | Product | Version / Range |
|---|---|---|
| Rapid7 | Metasploit | Framework 0 |
Helpful Resources
Exploitability
CWE
KEV
| CWE ID | Description |
|---|---|
| CWE-918 | The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. |
