{"id":"CVE-2021-37592","details":"Suricata before 5.0.8 and 6.x before 6.0.4 allows TCP evasion via a client with a crafted TCP/IP stack that can send a certain sequence of segments.","modified":"2026-05-30T17:27:52.595983Z","published":"2021-11-19T15:15:08.137Z","references":[{"type":"ADVISORY","url":"https://forum.suricata.io/t/suricata-6-0-4-and-5-0-8-released/1942"},{"type":"ADVISORY","url":"https://github.com/OISF/suricata/releases"},{"type":"REPORT","url":"https://redmine.openinfosecfoundation.org/issues/4569"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/oisf/suricata","events":[{"introduced":"0"},{"fixed":"aac67dc8984e3b24f42f4cb399311daae3b9c769"},{"introduced":"5219691f45ab6c6fb3c3970550dd670c73dbcfa6"},{"fixed":"e9c8767b905fcae53432076572bfbeaf639b202d"}],"database_specific":{"source":"CPE_RANGE","extracted_events":[{"introduced":"0"},{"fixed":"5.0.8"},{"introduced":"6.0.0"},{"fixed":"6.0.4"}],"cpe":"cpe:2.3:a:oisf:suricata:*:*:*:*:*:*:*:*"}}],"versions":["suricata-5.0.7","suricata-6.0.3","suricata-5.0.6","suricata-6.0.2","suricata-6.0.1","suricata-5.0.5","suricata-5.0.4","suricata-6.0.0","suricata-5.0.3","suricata-5.0.2","suricata-5.0.1","suricata-5.0.0","suricata-5.0.0-rc1","suricata-5.0.0-beta1","suricata-4.1.2","suricata-4.1.1","suricata-4.1.0","suricata-4.1.0-rc2","suricata-4.1.0-rc1","suricata-4.1.0-beta1","suricata-4.0.1","suricata-4.0.0","suricata-4.0.0-rc2","suricata-4.0.0-rc1","suricata-4.0.0-beta1","suricata-3.2.1","suricata-3.2","suricata-3.2RC1","suricata-3.2beta1","suricata-3.1.2","suricata-3.1.1","suricata-3.1","suricata-3.0.1","suricata-3.1RC1","suricata-3.0.1RC1","suricata-3.0","suricata-3.0RC3","suricata-3.0RC2","suricata-3.0RC1","suricata-2.1beta4","suricata-2.1beta3","suricata-2.1beta2","suricata-2.1beta1","suricata-2.0.2","suricata-2.0.1","suricata-2.0.1rc1","suricata-2.0","suricata-2.0rc3","suricata-2.0rc2","suricata-2.0rc1","suricata-2.0beta2","suricata-2.0beta1","suricata-1.4","suricata-1.4rc1","suricata-1.4beta3","suricata-1.4beta2","suricata-1.4beta1","suricata-1.3.1","suricata-1.3","suricata-1.3rc1","suricata-1.3beta2","suricata-1.3beta1","suricata-1.2.1","suricata-1.2","suricata-1.2rc1","suricata-1.2beta1","suricata-1.1","suricata-1.1rc1","suricata-1.1beta3","suricata-1.1beta2","suricata-1.1beta1","suricata-1.0.2","suricata-1.0.1","suricata-1.0.0","suricata-0.8.2"],"database_specific":{"source":"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2021-37592.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}