CVE-2026-102727 is a vulnerability in Eclipse Threadx Netx Duo
Published on September 29, 2026
FTP Passive Data Connection Not Bound to the Authenticated Control Peer
In Eclipse ThreadX NetX Duo versions 6.0 through 6.5.2.202603a, the FTP server accepts the first connection to a passive data port without checking that it comes from the client that requested passive mode. An unauthenticated network attacker who connects to the predictable port first receives the file an authenticated user downloads, or supplies the content of the file the user uploads.
Vulnerability Analysis
CVE-2026-102727 can be exploited with network access. This vulnerability is considered to have a low attack complexity. The potential impact of an exploit of this vulnerability is considered to have no impact on confidentiality and integrity and availability.
Weakness Type
Improper Restriction of Communication Channel to Intended Endpoints
The software establishes a communication channel to (or from) an endpoint for privileged or protected operations, but it does not properly ensure that it is communicating with the correct endpoint.
Products Associated with CVE-2026-102727
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Affected Versions
Eclipse Foundation Eclipse ThreadX NetX Duo:- Version 6.0, <= 6.5.2.202603a is affected.
- Version 6.5.2.202603b is unaffected.