{"id":"CVE-2026-45747","title":"Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine","summary":"Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to version 7.0.16, the Lua TLS certificate information helper could dereference NULL certificate fields when a Lu…","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-476"],"vendor":"oisf","product":"suricata","affected":["suricata < 7.0.16"],"patched":["suricata 7.0.16"],"published":"2026-09-10","updated":"2026-09-28","sourceUpdated":"2026-09-28T18:44:03.710","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-45747","references":[{"url":"https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315","label":"security-advisories@github.com"},{"url":"https://github.com/OISF/suricata/security/advisories/GHSA-vfc5-9844-rmhv","label":"security-advisories@github.com"},{"url":"https://redmine.openinfosecfoundation.org/issues/6286","label":"security-advisories@github.com"},{"url":"https://redmine.openinfosecfoundation.org/issues/6286","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","cve.org","exploit-available"],"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"yes","technicalImpact":"partial","timestamp":"2026-09-10T16:26:13.719357Z"},"ingestedAt":"2026-09-11T14:42:19.870Z","epss":0.0042,"epssPercentile":0.36084,"slug":"CVE-2026-45747","body":"## Overview\n\nSuricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to version 7.0.16, the Lua TLS certificate information helper could dereference NULL certificate fields when a Lua script requested certificate information for TLS traffic where some certificate fields were absent. Crafted TLS traffic processed by a deployment using affected Lua TLS scripting could crash Suricata, resulting in denial of service. Version 7.0.16 contains a fix. As a workaround, avoid Lua scripts that call TLS certificate information helpers on untrusted traffic (`TlsGetCertInfo` function), or update scripts to handle missing certificate fields where possible.\n\n## Affected\n\n- `suricata < 7.0.16`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `suricata 7.0.16`","depth":"midnight","depthScore":53,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":50229,"id":"CVE-2026-45747","ts":1789059487289,"field":"exploit_available","old":"false","new":"true"}]}