{"id":"CVE-2026-103416","title":"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 hol…","summary":"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 hol…","severity":"critical","cvss":9.3,"cvssVector":"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","cwe":["CWE-787"],"vendor":"Eclipse Foundation","product":"Eclipse ThreadX - NetX Duo","affected":["eclipse_threadx_-_netx_duo <= 6.5.1.202602"],"published":"2026-10-07","updated":"2026-10-07","sourceUpdated":"2026-10-07T09:17:04.647","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-103416","references":[{"url":"https://github.com/eclipse-threadx/netxduo/security/advisories/GHSA-4x76-j955-qhq2","label":"emo@eclipse.org"},{"url":"https://gitlab.eclipse.org/security/cve-assignment/-/work_items/356","label":"emo@eclipse.org"}],"tags":["nvd","cve.org"],"cvssSource":"cna","ingestedAt":"2026-10-07T09:22:30.525Z","slug":"CVE-2026-103416","body":"## Overview\n\nOut-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.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":51,"depthScoreParts":{"impact":51.2,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}