Description
Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 8.0.6, the FTP parser in src/app-layer-ftp.c treats a RETR or STOR command sent before PORT or PASV negotiation as a fatal application-layer error instead of a recoverable protocol event. The fatal state disables FTP application-layer parsing for the remainder of the TCP flow, so later commands can evade parser-dependent rules and logging; IPS mode instead drops the flow. This issue is fixed in version 8.0.6.
Published: 2026-09-18
Score: 3.7 Low
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
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Remediation

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History

Fri, 18 Sep 2026 21:30:00 +0000

Type Values Removed Values Added
Description Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Prior to 8.0.6, the FTP parser in src/app-layer-ftp.c treats a RETR or STOR command sent before PORT or PASV negotiation as a fatal application-layer error instead of a recoverable protocol event. The fatal state disables FTP application-layer parsing for the remainder of the TCP flow, so later commands can evade parser-dependent rules and logging; IPS mode instead drops the flow. This issue is fixed in version 8.0.6.
Title Suricata ftp: RETR/STOR before PORT/PASV can disable further IDS app-layer detection
Weaknesses CWE-755
References
Metrics cvssV3_1

{'score': 3.7, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N'}


Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-09-18T20:13:42.549Z

Reserved: 2026-07-16T19:35:57.768Z

Link: CVE-2026-63450

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-09-18T21:17:04.370

Modified: 2026-09-18T21:17:04.370

Link: CVE-2026-63450

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-19T11:15:14Z

Weaknesses