{"id":"CVE-2026-63450","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 8.0.6, the FTP parser in src/app-layer-ftp.c treats a RETR or STOR command sent before PORT or PASV negotiatio…","severity":"low","cvss":3.7,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N","cwe":["CWE-755"],"vendor":"OISF","product":"suricata","affected":["suricata < 8.0.6"],"published":"2026-09-18","updated":"2026-09-18","sourceUpdated":"2026-09-18T21:17:04.370","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-63450","references":[{"url":"https://github.com/OISF/suricata/commit/52490b8c26909772801afed98df63a6d62f3af18","label":"security-advisories@github.com"},{"url":"https://github.com/OISF/suricata/commit/feb0ff91159cea474a983adf92e4b56fb16e4ffc","label":"security-advisories@github.com"},{"url":"https://github.com/OISF/suricata/pull/15704","label":"security-advisories@github.com"},{"url":"https://github.com/OISF/suricata/releases/tag/suricata-8.0.6","label":"security-advisories@github.com"},{"url":"https://github.com/OISF/suricata/security/advisories/GHSA-56wx-7hqh-wfgr","label":"security-advisories@github.com"},{"url":"https://redmine.openinfosecfoundation.org/issues/8659","label":"security-advisories@github.com"}],"tags":["nvd","cve.org"],"ingestedAt":"2026-09-18T20:51:25.799Z","epss":0.00245,"epssPercentile":0.16014,"slug":"CVE-2026-63450","body":"## Overview\n\nSuricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 8.0.6, the FTP parser in src/app-layer-ftp.c treats a RETR or STOR command sent before PORT or PASV negotiation as a fatal application-layer error instead of a recoverable protocol event. The fatal state disables FTP application-layer parsing for the remainder of the TCP flow, so later commands can evade parser-dependent rules and logging; IPS mode instead drops the flow. This issue is fixed in version 8.0.6.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":20,"depthScoreParts":{"impact":20.4,"likelihood":0,"exploitation":0,"ransomware":0},"changes":[]}