CVE-2026-92843 — Out-of-bounds Read via the TLS 1.3 Certificate extensions_length in NetX Secure

CVE-2026-92843

Out-of-bounds Read via the TLS 1.3 Certificate extensions_length in NetX Secure PUBLISHED

Description (CNA)

A missing bounds check in the TLS 1.3 Certificate-message parser of NetX Secure lets a malicious TLS 1.3 server trigger an unsigned-integer underflow and a subsequent heap out-of-bounds read in any peer that processes a remote Certificate message. It is reachable pre-authentication, during the normal handshake, before certificate verification completes.

Affected (CNA)

Vendor / product	Versions
Eclipse Foundation / Eclipse ThreadX - NetX Duo	affected 0 through 6.5.1.202602; unaffected 6.5.2.202603

CWE

CWE-125

References

https://github.com/eclipse-threadx/netxduo/security/advisories/GHSA-4m85-f9qh-q3jv

ADP enrichment

CISA-ADP

No English description supplied.

No references supplied.