{"id":"CVE-2026-92843","title":"Out-of-bounds Read via the TLS 1.3 Certificate extensions_length in NetX Secure","summary":"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 Certificat…","severity":"high","cvss":8.7,"cvssVector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","cvssSource":"cna","cwe":["CWE-125"],"vendor":"Eclipse Foundation","product":"NetX Duo","affected":["netx_duo <= 6.5.1.202602"],"ssvc":{"exploitation":"none","automatable":"yes","technicalImpact":"partial","timestamp":"2026-10-20T17:08:26.088209Z"},"published":"2026-10-20","updated":"2026-10-20","sourceUpdated":"2026-10-20T17:08:35.381Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-92843","references":[{"url":"https://github.com/eclipse-threadx/netxduo/security/advisories/GHSA-4m85-f9qh-q3jv"}],"tags":["cve.org"],"ingestedAt":"2026-10-20T16:10:53.320Z","slug":"CVE-2026-92843","body":"## Overview\n\nA 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.\n\n## Affected\n\n- `netx_duo <= 6.5.1.202602`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":48,"depthScoreParts":{"impact":47.8,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}