{"id":"CVE-2026-106464","title":"`_nx_secure_x509_parse_signature_data` computes the certificate signature's length as `tlv_length - 1` without first checking that `tlv_length` is non-zero","summary":"`_nx_secure_x509_parse_signature_data` computes the certificate signature's length as `tlv_length - 1` without first checking that `tlv_length` is non-zero. A certificate whose signature is an empty ASN.1 BIT STRING therefore parses succ…","severity":"high","cwe":["CWE-125","CWE-191"],"published":"2026-10-14","updated":"2026-10-14","sourceUpdated":"2026-10-14T18:17:24.960","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-106464","references":[{"url":"https://github.com/eclipse-threadx/netxduo/security/advisories/GHSA-ww3q-3444-q488","label":"emo@eclipse.org"},{"url":"https://gitlab.eclipse.org/security/cve-assignment/-/work_items/368","label":"emo@eclipse.org"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-10-14T18:47:39.308Z","vendor":"Eclipse Foundation","product":"NetX Duo","affected":["netx_duo <= 6.5.2.202603"],"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","slug":"CVE-2026-106464","body":"## Overview\n\n`_nx_secure_x509_parse_signature_data` computes the certificate signature's length as `tlv_length - 1` without first checking that `tlv_length` is non-zero. A certificate whose signature is an empty ASN.1 BIT STRING therefore parses successfully and leaves the certificate holding a signature length of `0xFFFFFFFF` and a signature pointer one byte past the end of the buffer. Certificates are parsed from the peer during the TLS handshake, so the input is remote and unauthenticated.\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":[{"seq":221439,"id":"CVE-2026-106464","ts":1792031240685,"field":"cvss","old":null,"new":"8.7"},{"seq":221438,"id":"CVE-2026-106464","ts":1792031240685,"field":"severity","old":"none","new":"high"}]}