CVE-2024-20351— Cisco Firepower Threat Defense Software Snort Firewall Denial of Service Vulnerability
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I. Basic Information for CVE-2024-20351
Vulnerability Information
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Vulnerability Title
Cisco Firepower Threat Defense Software Snort Firewall Denial of Service Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability in the TCP/IP traffic handling function of the Snort Detection Engine of Cisco Firepower Threat Defense (FTD) Software and Cisco FirePOWER Services could allow an unauthenticated, remote attacker to cause legitimate network traffic to be dropped, resulting in a denial of service (DoS) condition. This vulnerability is due to the improper handling of TCP/IP network traffic. An attacker could exploit this vulnerability by sending a large amount of TCP/IP network traffic through the affected device. A successful exploit could allow the attacker to cause the Cisco FTD device to drop network traffic, resulting in a DoS condition. The affected device must be rebooted to resolve the DoS condition.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
未加控制的资源消耗(资源穷尽)
Source: NVD (National Vulnerability Database)
Vulnerability Title
Cisco Firepower Threat Defense和Cisco FirePOWER Services 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Firepower Threat Defense（FTD）和Cisco FirePOWER Services都是美国思科（Cisco）公司的产品。Cisco Firepower Threat Defense是一套提供下一代防火墙服务的统一软件。Cisco FirePOWER Services是种综合安全解决方案，旨在增强网络安全性。 Cisco Firepower Threat Defense和Cisco FirePOWER Services存在安全漏洞，该漏洞源于对 TCP/IP 网络流量处
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Cisco | Cisco Firepower Threat Defense Software | 6.2.3.14 | - |
II. Public POCs for CVE-2024-20351
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · Cisco · 2024-10-23 · 52 CVEs total
| CVE-2024-20329 | 9.9 CRITICAL | Cisco Adaptive Security Appliance Software Remote Command Injection Vulnerability |
| CVE-2024-20424 | 9.9 CRITICAL | Cisco Secure Firewall Management Center 安全漏洞 |
| CVE-2024-20412 | 9.3 CRITICAL | Cisco Firepower Threat Defense 安全漏洞 |
| CVE-2024-20339 | 8.6 HIGH | Cisco Firepower Threat Defense Software for Firepower 2100 Series TLS Denial of Service Vu |
| CVE-2024-20260 | 8.6 HIGH | Cisco Adaptive Security Virtual Appliance and Secure Firewall Threat Defense Virtual SSL V |
| CVE-2024-20494 | 8.6 HIGH | Cisco Firepower Threat Defense和Cisco Adaptive Security Appliance 安全漏洞 |
| CVE-2024-20426 | 8.6 HIGH | Cisco Firepower Threat Defense和Cisco Adaptive Security Appliance 安全漏洞 |
| CVE-2024-20330 | 8.6 HIGH | Cisco Firepower Threat Defense Software for Cisco Firepower 2100 Series TCP UDP Snort 2 an |
| CVE-2024-20402 | 8.6 HIGH | Cisco Firepower Threat Defense和Cisco Adaptive Security Appliance 安全漏洞 |
| CVE-2024-20495 | 8.6 HIGH | Cisco Firepower Threat Defense和Cisco Adaptive Security Appliance 安全漏洞 |
| CVE-2024-20268 | 7.7 HIGH | Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software SNMP Deni |
| CVE-2024-20408 | 7.7 HIGH | Cisco Firepower Threat Defense和Cisco Adaptive Security Appliance 安全漏洞 |
| CVE-2024-20275 | 6.8 MEDIUM | Cisco Secure Firewall Management Center Software Backup Cluster Command Injection Vulnerab |
| CVE-2024-20331 | 6.8 MEDIUM | Cisco Adaptive Security Appliance and Firepower Threat Defense Software VPN Authentication |
| CVE-2024-20379 | 6.5 MEDIUM | Cisco Secure Firewall Management Center 安全漏洞 |
| CVE-2024-20340 | 6.5 MEDIUM | Cisco Secure Firewall Management Center 安全漏洞 |
| CVE-2024-20473 | 6.5 MEDIUM | Cisco Secure Firewall Management Center 安全漏洞 |
| CVE-2024-20472 | 6.5 MEDIUM | Cisco Secure Firewall Management Center 安全漏洞 |
| CVE-2024-20471 | 6.5 MEDIUM | Cisco Secure Firewall Management Center 安全漏洞 |
| CVE-2024-20374 | 6.5 MEDIUM | Cisco Secure Firewall Management Center 安全漏洞 |
Showing top 20 of 52 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
Same product: Cisco Firepower Threat Defense Software
- CVE-2025-20268
Cisco Secure Firewall Threat Defense Software Geolocation Re - CVE-2025-20222
Cisco Adaptive Security Appliance Software and Firepower Thr - CVE-2025-20217
Cisco Firepower Threat Defense Intrusion Detection Denial of - CVE-2021-1494
Snort 安全漏洞 - CVE-2021-34753
Cisco Firepower Threat Defense Ethernet Industrial Protocol
Same vendor: Cisco
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Cisco IoT Field Network Director Remote Device Denial of Ser - CVE-2026-20169
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Same weakness: CWE-400
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FastGPT: Uncontrolled Resource Consumption leading to Sandbo - CVE-2026-42212
SolidCAM-GPPL-IDE: XML External Entity (XXE) and billion-lau - CVE-2026-32686
Unbounded exponent in decimal enables unauthenticated DoS - CVE-2026-20188
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V. Comments for CVE-2024-20351
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