CVE-2024-20407

MediumCVSS 5.8/10Last modified Aug 11, 2026

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.

Metrics

CVSS 3.1 5.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:L/A:N

Weakness enumeration

CWE-399

Affected software

No affected versions have been published.

Timeline

Published
Oct 23, 2024
Last modified
Aug 11, 2026
NVD status
Analyzed

Related CVEs from 2024

CVE-2024-204087.7A vulnerability in the Dynamic Access Policies (DAP) feature of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat CVE-2024-204096.1A vulnerability in the web-based management interface of Cisco Firepower Management Center (FMC) Software could allow an unauthenticated, reCVE-2024-204106.1A vulnerability in the web-based management interface of Cisco Firepower Management Center (FMC) Software could allow an unauthenticated, reCVE-2024-204116.7A vulnerability in Cisco NX-OS Software could allow an authenticated, local attacker with privileges to access the Bash shell to executCVE-2024-204128.4A vulnerability in Cisco Firepower Threat Defense (FTD) Software for Cisco Firepower 1000, 2100, 3100, and 4200 Series could allow an unauthCVE-2024-204136.7A vulnerability in Cisco NX-OS Software could allow an authenticated, local attacker with privileges to access the Bash shell to elevate priCVE-2024-204146.5A vulnerability in the web UI feature of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, remote attacker to conCVE-2024-204156.1A vulnerability in the web-based management interface of Cisco Firepower Management Center (FMC) Software could allow an unauthenticated, reCVE-2024-204166.5A vulnerability in the upload module of Cisco RV340 and RV345 Dual WAN Gigabit VPN Routers could allow an authenticated, remote attacker to CVE-2024-204178.1Multiple vulnerabilities in the REST API of Cisco Identity Services Engine (ISE) could allow an authenticated, remote attacker to conduct blCVE-2024-2041810.0A vulnerability in the web-based management interface of Cisco Unified Industrial Wireless Software for Cisco Ultra-Reliable Wireless BackhaCVE-2024-2041910.0A vulnerability in the authentication system of Cisco Smart Software Manager On-Prem (SSM On-Prem) could allow an unauthenticated, remote at
CVE-2024-20407: Medium severity, CVSS 5.8 | Vulnix