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fkie_cve-2026-102712

2026-11-13T10:06:32.150963+00:00

In Eclipse ThreadX NetX Duo versions up to and including 6.5.2.202603, built with DTLS server support, the NetX Secure DTLS server's ClientHello parser reads the session ID, cookie and ciphersuite list without bounding them by the bytes remaining in the message. An unauthenticated peer can send a ClientHello declaring fields longer than the message and make the server read past it; nothing read is sent back to the peer, and the read can fault the server only on targets that trap the address beyond the buffer.

GHSA-52fg-7x3j-mp79

2026-11-13T10:06:32.151059+00:00

On the first DTLS ClientHello, the parser copies a device-claimed session_id length and validates the

ciphersuite-list length against the total record length instead of the remaining bytes. An unauthenticated

peer drives an OOB source read of up to 255 bytes, and those bytes are echoed verbatim into the outgoing

ServerHello, disclosing adjacent process memory over the network. The crash variant fires on the first

packet.