{"id":"CVE-2026-92843","summary":"Out-of-bounds Read via the TLS 1.3 Certificate extensions_length in NetX Secure","details":"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 Certificate message. It is reachable pre-authentication, during the normal handshake, before certificate verification completes.","aliases":["GHSA-4m85-f9qh-q3jv"],"modified":"2026-10-21T03:00:15.315267570Z","published":"2026-10-20T15:12:55.919Z","database_specific":{"cna_assigner":"eclipse","cwe_ids":["CWE-125"],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/92xxx/CVE-2026-92843.json"},"references":[{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/92xxx/CVE-2026-92843.json"},{"type":"ADVISORY","url":"https://github.com/eclipse-threadx/netxduo/security/advisories/GHSA-4m85-f9qh-q3jv"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-92843"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/eclipse-threadx/netxduo","events":[{"introduced":"0"},{"last_affected":"1a0e9e43a03e37ddecfb6b49e9b078d6e1803d05"}],"database_specific":{"extracted_events":[{"range":[{"introduced":"0"},{"last_affected":"6.5.1.202602"}],"source":"AFFECTED_FIELD","strategy":"StandardRange"}]}}],"versions":["v6.4.1_rel","v6.5.1.202602_rel","v6.5.0.202601_rel","v6.4.5.202504_rel","v6.4.4.202503a","v.6.4.4.202503_rel","v6.4.3_rel","v6.4.2_rel","v6.4.0_rel","v6.3.0_rel","v6.2.1_rel","v6.2.0_rel","v6.1.12_rel","v6.1.11_rel","v6.1.10_rel","v6.1.9_rel","v6.1.8_rel","v6.1.7_rel","v6.1.6_rel","v6.1.5_rel","v6.1.4_rel","v6.1.3_rel","v6.1.2_rel","v6.1_rel","v6.0.2_rel","v6.0.1_rel","v6.0_rel"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-92843.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V4","score":"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"}]}