🛡️ CVE-2024-20407
🟡 CVSS 5.8 — Medium ✅ No Known Exploit CWE-399 NVD
5.8
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

A vulnerability in the interaction between the TCP Intercept feature and the Snort 3 detection engine on Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to bypass configured policies on an affected system. Devices that are configured with Snort 2 are not affected by this vulnerability. This vulnerability is due to a logic error when handling embryonic (half-open) TCP connections. An attacker could exploit this vulnerability by sending a crafted traffic pattern through an affected device. A successful exploit could allow unintended traffic to enter the network protected by the affected device.

Details

Severity MEDIUM
CVSS Score 5.8
CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N
CWE CWE-399
Public Exploit ✅ No
Source NVD
Published 2024-10-23
Updated 2026-06-02
Modified 2025-08-05
Fix URL N/A

Affected Packages

Software From version Fixed in
firepower-threat-defense

Similar Threats

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