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Vulnerabilities / CVE-2021-37592

critical

CVE-2021-37592

Suricata before 5.0.8 and 6.x before 6.0.4 allows TCP evasion via a cl ...

Published Modified CWE 787
In the Trivy database since at least 24 Oct 2026, 07:11 UTCWhen it arrived before that build is not recorded.

Severity by source

NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Trivy's own label is CRITICAL. Rated critical by NVD. Rated lower by Ubuntu (medium).

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.

Affected packages and fixed versions

SourcePackageFixed in
alpine 3.15suricata6.0.4-r0
alpine 3.16suricata6.0.4-r0
alpine 3.17suricata6.0.4-r0
alpine 3.18suricata6.0.4-r0
alpine 3.19suricata6.0.4-r0
alpine 3.20suricata6.0.4-r0
alpine 3.21suricata6.0.4-r0
alpine 3.22suricata6.0.4-r0
alpine 3.23suricata6.0.4-r0
alpine 3.24suricata6.0.4-r0
alpine edgesuricata6.0.4-r0
debian 10suricatano fix listed
Show all 27 entries from 27 sources
SourcePackageFixed in
alpine 3.15suricata6.0.4-r0
alpine 3.16suricata6.0.4-r0
alpine 3.17suricata6.0.4-r0
alpine 3.18suricata6.0.4-r0
alpine 3.19suricata6.0.4-r0
alpine 3.20suricata6.0.4-r0
alpine 3.21suricata6.0.4-r0
alpine 3.22suricata6.0.4-r0
alpine 3.23suricata6.0.4-r0
alpine 3.24suricata6.0.4-r0
alpine edgesuricata6.0.4-r0
debian 10suricatano fix listed
debian 11suricatano fix listed
debian 13suricata1:6.0.4-1
debian 14suricata1:6.0.4-1
debian 9suricatano fix listed
echosuricata1:6.0.4-1
ubuntu 22.04suricata1:6.0.4-1
ubuntu 22.10suricata1:6.0.4-1
ubuntu 23.04suricata1:6.0.4-1
ubuntu 23.10suricata1:6.0.4-1
ubuntu 24.04suricata1:6.0.4-1
ubuntu 24.10suricata1:6.0.4-1
ubuntu 25.04suricata1:6.0.4-1
ubuntu 25.10suricata1:6.0.4-1
ubuntu 26.04suricata1:6.0.4-1
ubuntu 26.10suricata1:6.0.4-1

References

Vulnerability data compiled from the Trivy vulnerability database (trivy-db, Aqua Security, Apache License 2.0), which aggregates third-party advisories. CVE records are published by The MITRE Corporation under the CVE Terms of Use; CVE is a trademark of MITRE. This product uses data from the NVD API but is not endorsed or certified by the NVD. Severity, titles and advisory data from the GitHub Advisory Database (CC BY 4.0), Red Hat security data (CC BY 4.0) and the other sources linked on each entry. Entries may be summarised or re-formatted; the linked original is the authoritative record.