{"id":"CVE-2026-57224","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. From 8.0.0 until 8.0.6, the DHCP parser in rust/src/dhcp/dhcp.rs creates stateless transactions without recording their…","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-400","CWE-770"],"vendor":"OISF","product":"suricata","affected":["suricata >= 8.0.0, < 8.0.6"],"published":"2026-09-18","updated":"2026-09-23","sourceUpdated":"2026-09-23T18:12:04.247","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-57224","references":[{"url":"https://github.com/OISF/suricata/commit/3f86c56c800392ede5cfaf7a944a431fd8445c55","label":"security-advisories@github.com"},{"url":"https://github.com/OISF/suricata/commit/5af13e3eb06be0387da8703b611c5ce932245c59","label":"security-advisories@github.com"},{"url":"https://github.com/OISF/suricata/commit/bac8a69ca48c14582d39a244a87edad44751ebe1","label":"security-advisories@github.com"},{"url":"https://github.com/OISF/suricata/commit/ef035c7603293a10c5ad087e3d20b05f75236144","label":"security-advisories@github.com"},{"url":"https://github.com/OISF/suricata/pull/15740","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-m2vc-g65c-ph7m","label":"security-advisories@github.com"},{"url":"https://redmine.openinfosecfoundation.org/issues/8621","label":"security-advisories@github.com"}],"tags":["nvd","cve.org"],"epss":0.00408,"epssPercentile":0.32272,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-09-18T20:22:12.045094Z"},"ingestedAt":"2026-09-18T20:51:25.674Z","slug":"CVE-2026-57224","body":"## Overview\n\nSuricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. From 8.0.0 until 8.0.6, the DHCP parser in rust/src/dhcp/dhcp.rs creates stateless transactions without recording their packet direction with AppLayerTxData::for_direction(), so a sensor that observes only one direction cannot mark the unseen direction inspected or free completed transactions. The RDP parser in rust/src/rdp/rdp.rs has the same direction-state defect. The per-flow transaction list can grow without bound and cleanup repeatedly scans it, causing increasing CPU and memory consumption and eventual denial of service. 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":36,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}