Always-Incorrect Control Flow Implementation in Suricata - #VU152928
Published: September 30, 2026
Vulnerability identifier: #VU152928
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-670
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to bypass FTP-specific inspection and enforcement.
The vulnerability exists due to always-incorrect control flow implementation in the FTP application-layer parser when processing an overlong FTP command or reply followed by a complete FTP line in the same stream slice. A remote attacker can send a crafted FTP control line sequence to bypass FTP-specific inspection and enforcement.
Raw stream inspection remains active, but FTP data-channel recognition, file extraction, and filestore may be bypassed.
Affected software
Suricata
Remediation
Install security update from vendor's website.
Suricata - update to 8.0.7