Out-of-bounds write via the TLS 1.3 handshake message cache in NetX Duo in Eclipse ThreadX NetX Duo 6.5.1.202602 allows a handshake message larger than the cache writes past it and on into the rest of the session control block, which holds pointers. A malicious or compromised server can make a TLS 1.3 client produce such a message before certificate authentication completes, so no server certificate is needed to reach it.
History

Fri, 09 Oct 2026 08:00:00 +0000

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

Wed, 07 Oct 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Wed, 07 Oct 2026 10:45:00 +0000

Type Values Removed Values Added
Title Out-of-Bounds Write in TLS 1.3 Handshake Message Cache of NetX Duo

Wed, 07 Oct 2026 09:15:00 +0000

Type Values Removed Values Added
Description Out-of-bounds write via the TLS 1.3 handshake message cache in NetX Duo in Eclipse ThreadX NetX Duo 6.5.1.202602 allows a handshake message larger than the cache writes past it and on into the rest of the session control block, which holds pointers. A malicious or compromised server can make a TLS 1.3 client produce such a message before certificate authentication completes, so no server certificate is needed to reach it.
Weaknesses CWE-787
References
Metrics cvssV4_0

{'score': 9.3, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N'}


cve-icon MITRE

Status: PUBLISHED

Assigner: eclipse

Published: 2026-10-07T08:55:12.097Z

Updated: 2026-10-07T18:04:27.490Z

Reserved: 2026-09-30T14:46:53.599Z

Link: CVE-2026-103416

cve-icon Vulnrichment

Updated: 2026-10-07T18:03:50.667Z

cve-icon NVD

Status : Deferred

Published: 2026-10-07T09:17:04.647

Modified: 2026-10-07T19:17:31.577

Link: CVE-2026-103416

cve-icon Redhat

No data.