23 Oct 2026 15:48:27 UTC
Suricata ftp: RETR/STOR before PORT/PASV can disable further IDS app-layer detection
cve-program · CVE-2026-63450 · Published
CVE-2026-63450
Suricata ftp: RETR/STOR before PORT/PASV can disable further IDS app-layer detection
CVSS 3.1 3.7 LOWCheck source for fixed versionsKEV status unknown
cve-program · CVE-2026-63450
PublishedSuricata 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.
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