CVE-2021-37592

CriticalCVSS 9.8/10Last modified Jun 17, 2026

Description

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.

Metrics

CVSS 3.1 9.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-787

Affected software

Vendor	Product	Versions
n/a	n/a	n/a

References

https://forum.suricata.io/t/suricata-6-0-4-and-5-0-8-released/1942Release Notes, Vendor Advisory
https://github.com/OISF/suricata/releasesRelease Notes, Third Party Advisory
https://redmine.openinfosecfoundation.org/issues/4569Permissions Required, Third Party Advisory
https://forum.suricata.io/t/suricata-6-0-4-and-5-0-8-released/1942Release Notes, Vendor Advisory
https://github.com/OISF/suricata/releasesRelease Notes, Third Party Advisory
https://redmine.openinfosecfoundation.org/issues/4569Permissions Required, Third Party Advisory

Timeline

Published: Nov 19, 2021
Last modified: Jun 17, 2026
NVD status: Modified

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