Eclipse NetX Duo up to 6.5.2.202603 X.509 Parser _nx_secure_x509_parse_signature_data tlv_length out-of-bounds

Summaryinfo

A vulnerability classified as critical has been found in Eclipse NetX Duo up to 6.5.2.202603. Affected is the function _nx_secure_x509_parse_signature_data of the component X.509 Parser. This manipulation of the argument tlv_length causes out-of-bounds. This vulnerability is registered as CVE-2026-106464. Remote exploitation of the attack is possible. No exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability classified as critical was found in Eclipse NetX Duo up to 6.5.2.202603. Affected by this vulnerability is the function _nx_secure_x509_parse_signature_data of the component X.509 Parser. The manipulation of the argument tlv_length with an unknown input leads to a out-of-bounds vulnerability. The CWE definition for the vulnerability is CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. As an impact it is known to affect confidentiality, integrity, and availability. The summary by CVE is:

`_nx_secure_x509_parse_signature_data` computes the certificate signature's length as `tlv_length - 1` without first checking that `tlv_length` is non-zero. A certificate whose signature is an empty ASN.1 BIT STRING therefore parses successfully and leaves the certificate holding a signature length of `0xFFFFFFFF` and a signature pointer one byte past the end of the buffer. Certificates are parsed from the peer during the TLS handshake, so the input is remote and unauthenticated.

The advisory is shared at github.com. This vulnerability is known as CVE-2026-106464 since 10/06/2026. The exploitation appears to be easy. The attack can be launched remotely. The exploitation doesn't need any form of authentication. Technical details are known, but no exploit is available.

Upgrading to version 6.5.2.202603a eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-101502). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Vendor

• Eclipse

Name

• NetX Duo

Version

• 6.5.2.202603

License

• open-source

CPE 2.3info

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CPE 2.2info

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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