{"cve":"CVE-2026-57224","nvd":{"published":"2026-09-18T20:17:17.780","modified":"2026-09-28T18:36:45.227","status":"Analyzed","description":"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 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.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":6.5},"cwes":["CWE-400","CWE-770"],"references":["https://github.com/OISF/suricata/commit/3f86c56c800392ede5cfaf7a944a431fd8445c55","https://github.com/OISF/suricata/commit/5af13e3eb06be0387da8703b611c5ce932245c59","https://github.com/OISF/suricata/commit/bac8a69ca48c14582d39a244a87edad44751ebe1","https://github.com/OISF/suricata/commit/ef035c7603293a10c5ad087e3d20b05f75236144","https://github.com/OISF/suricata/pull/15740"],"products":["oisf:suricata"],"source":"nvd","synced_at":"2026-10-19T22:55:23.253742848+00:00"},"epss":{"cve":"CVE-2026-57224","score":0.00408,"percentile":0.35128,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}