The TLS 1.3 Certificate-message parser in NetX Secure decrements the message length to skip a context byte without first establishing that the message has a byte to skip. A zero-length Certificate message therefore wraps the unsigned length to `0xFFFFFFFF`, which makes the bounds check that follows vacuous and sends the parser reading past the session packet buffer.



The trigger is a four-byte handshake header and requires no cryptographic validity. It is reachable pre-authentication.
Advisories

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Fixes

Solution

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Workaround

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History

Tue, 20 Oct 2026 20:30:00 +0000

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

Tue, 20 Oct 2026 17:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Tue, 20 Oct 2026 15:30:00 +0000

Type Values Removed Values Added
Description The TLS 1.3 Certificate-message parser in NetX Secure decrements the message length to skip a context byte without first establishing that the message has a byte to skip. A zero-length Certificate message therefore wraps the unsigned length to `0xFFFFFFFF`, which makes the bounds check that follows vacuous and sends the parser reading past the session packet buffer. The trigger is a four-byte handshake header and requires no cryptographic validity. It is reachable pre-authentication.
Title Out-of-bounds Read via a Zero-length TLS 1.3 Certificate Message in NetX Secure
Weaknesses CWE-125
CWE-191
References
Metrics cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: eclipse

Published:

Updated: 2026-10-20T17:02:19.980Z

Reserved: 2026-09-23T13:43:04.315Z

Link: CVE-2026-92853

cve-icon Vulnrichment

Updated: 2026-10-20T17:02:15.295Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-20T16:17:17.277

Modified: 2026-10-20T19:48:50.250

Link: CVE-2026-92853

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-20T20:15:06Z

Weaknesses