Description
In Eclipse ThreadX NetX Duo versions 6.0 through 6.5.2.202603a, the FTP client in IPv4 passive mode opens its data connection to whatever address the server names in its 227 reply instead of the server it is talking to. A malicious FTP server can make the client connect to any host and port the device can reach, using it to scan the internal network and to deliver uploads to internal services.
Published: 2026-09-29
Score: 6.9 Medium
EPSS: < 1% Very Low
KEV: No
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Remediation

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History

Wed, 04 Nov 2026 09:45:00 +0000

Type Values Removed Values Added
Description In the IPv4 PASV path, the FTP Client accepts whatever address was sent in the server's `227` reply. Validation only covers the parse and the non-zero values, thus a malicious server can name any address and direct the Client there. In Eclipse ThreadX NetX Duo versions 6.0 through 6.5.2.202603a, the FTP client in IPv4 passive mode opens its data connection to whatever address the server names in its 227 reply instead of the server it is talking to. A malicious FTP server can make the client connect to any host and port the device can reach, using it to scan the internal network and to deliver uploads to internal services.
Title FTP Client accepts arbitrary IPv4 address from passive mode reply The FTP client trusts arbitrary IP addresses in the PASV server response
Metrics cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N'}

cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N'}


Wed, 30 Sep 2026 21:00:00 +0000

Type Values Removed Values Added
First Time appeared Eclipse
Eclipse netx Duo
Vendors & Products Eclipse
Eclipse netx Duo

Tue, 29 Sep 2026 22:15:00 +0000

Type Values Removed Values Added
Title FTP Client accepts arbitrary IPv4 address from passive mode reply

Tue, 29 Sep 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 29 Sep 2026 18:00:00 +0000

Type Values Removed Values Added
Description In the IPv4 PASV path, the FTP Client accepts whatever address was sent in the server's `227` reply. Validation only covers the parse and the non-zero values, thus a malicious server can name any address and direct the Client there.
Weaknesses CWE-918
References
Metrics cvssV4_0

{'score': 6.9, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N'}


Subscriptions

Eclipse Netx Duo
cve-icon MITRE

Status: PUBLISHED

Assigner: eclipse

Published:

Updated: 2026-11-04T09:50:18.031Z

Reserved: 2026-09-29T16:15:17.733Z

Link: CVE-2026-102722

cve-icon Vulnrichment

Updated: 2026-09-29T18:34:35.914Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-29T18:17:11.693

Modified: 2026-11-04T10:17:24.010

Link: CVE-2026-102722

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-11-04T15:00:19Z

Weaknesses