CVE-2026-102712GHSA-5xr3-wpxf-rw5q
NetX Duo: 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 unau
Eclipse Foundation NetX Duo
CVSS
8.8HighExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV
Exploit odds (EPSS)0.25%Chance of exploitation activity in the next 30 days, higher than 15% of CVEs. Scored 23 Oct 2026FIRST EPSS
What fixes it
- 6.5.2.202603aNetX Duo, eclipse threadxGitHub
A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.
Description
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.
Text from GitHub Advisory Database
Affected versions 2
- NetX Duoaffected: all versions through 6.5.1.202602CVE List
- NetX Duo, eclipse threadx<= 6.5.2.202603GitHub