{"id":"CVE-2026-45761","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-45761","generatedAt":"2026-10-28T03:28:42.851Z","title":"Prior to versions 7.0.16 and 8.0.5, a crafted rule using mixed-case frame syntax could trigger a heap buffer overflow while Suricata is loading signatures.","description":"Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to versions 7.0.16 and 8.0.5, a crafted rule using mixed-case frame syntax could trigger a heap buffer overflow while Suricata is loading signatures. The issue is reached during rule parsing/loading rather than by network traffic alone. Versions 7.0.16 and 8.0.5 contain a fix. As a workaround, preprocess rules to check that frames are all lowercase and/or only load trusted rulesets.","published":"2026-09-10T21:17:28.000Z","lastModified":"2026-09-16T20:17:47.000Z","status":"Analyzed","sourceIdentifier":"security-advisories@github.com","cvss":{"version":"3.1","score":3.3,"severity":"LOW","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L"},"cwe":["CWE-122"],"affected":["oisf/suricata"],"epss":{"score":0.00179,"percentile":0.07412,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.18%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://forum.suricata.io/t/suricata-8-0-5-and-7-0-16-released/6315","tags":["Release Notes","Vendor Advisory"],"source":"security-advisories@github.com"},{"url":"https://github.com/OISF/suricata/security/advisories/GHSA-r74x-74x5-r9vm","tags":["Vendor Advisory"],"source":"security-advisories@github.com"},{"url":"https://redmine.openinfosecfoundation.org/issues/8526","tags":["Permissions Required"],"source":"security-advisories@github.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-45761","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}