CVE-2026-102728

Summary

Two client-side TLS/DTLS handshake parsers in NetX Secure read fields from a server-supplied message before validating that the message is long enough to contain them. Both are bounded out-of-bounds reads on a remotely reachable path, both are reached from a TLS or DTLS client connecting to a malicious or malformed server, and both have the same shape: the bounds check exists and returns the correct status, but it runs after the read it is meant to guard.

Affected Software

Weaknesses

• CWE-126: CWE-126 Buffer Over-read

References

• https://github.com/eclipse-threadx/netxduo/security/advisories/GHSA-4q67-8385-j6m5

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