CVE-2021-37592

Publication date 19 November 2021

Last updated 26 August 2025

Ubuntu priority

Cvss 3 Severity Score

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.

Show unmaintained releases

Package	Ubuntu Release	Status
suricata	26.04 LTS resolute	Fixed 1:6.0.4-1
	25.10 questing	Fixed 1:6.0.4-1
	25.04 plucky	Fixed 1:6.0.4-1
	24.10 oracular	Fixed 1:6.0.4-1
	24.04 LTS noble	Fixed 1:6.0.4-1
	23.10 mantic	Fixed 1:6.0.4-1
	23.04 lunar	Fixed 1:6.0.4-1
	22.10 kinetic	Fixed 1:6.0.4-1
	22.04 LTS jammy	Fixed 1:6.0.4-1
	18.04 LTS bionic	Needs evaluation
	16.04 LTS xenial	Ignored end of standard support
	14.04 LTS trusty	Ignored end of standard support

CVSS version: CVSS v3.0

Base score 9.8 · Critical

Base metrics

Scores

Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H