CVE-2020-3562— Cisco Firepower 2100 Series SSL/TLS Inspection Denial of Service Vulnerability
Get alerts for future matching vulnerabilitiesLog in to subscribe
I. Basic Information for CVE-2020-3562
Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗ Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.
Vulnerability Title
Cisco Firepower 2100 Series SSL/TLS Inspection Denial of Service Vulnerability
Source: NVD (National Vulnerability Database)
Vulnerability Description
A vulnerability in the SSL/TLS inspection of Cisco Firepower Threat Defense (FTD) Software for Cisco Firepower 2100 Series firewalls could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability is due to improper input validation for certain fields of specific SSL/TLS messages. An attacker could exploit this vulnerability by sending a malformed SSL/TLS message through an affected device. A successful exploit could allow the attacker to cause the affected device to reload, resulting in a DoS condition. No manual intervention is needed to recover the device after it has reloaded.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
内存缓冲区边界内操作的限制不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Cisco Firepower Threat Defense 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Cisco Firepower Threat Defense（FTD）是美国思科（Cisco）公司的一套提供下一代防火墙服务的统一软件。 Cisco Firepower Threat Defense 存在安全漏洞，该漏洞源于。该漏洞源于对特定SSL TLS消息的某些字段的输入验证不当造成的。攻击者可利用该漏洞可以利用此漏洞，通过受影响的设备发送格式错误的SSL TLS消息。成功利用该漏洞可以使攻击者可利用该漏洞导致受影响的设备重新加载，从而导致DoS状态。
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 | n/a | - |
II. Public POCs for CVE-2020-3562
| # | POC Description | Source Link | Shenlong Link |
|---|
AI-Generated POCPremium
No public POC found.
Login to generate AI POCIII. Intelligence Information for CVE-2020-3562
请登录查看更多情报信息。
Same Patch Batch · Cisco · 2020-10-21 · 40 CVEs total
| CVE-2020-3456 | 8.8 HIGH | Cisco FXOS Software Firepower Chassis Manager Cross-Site Request Forgery Vulnerability |
| CVE-2020-3373 | 8.6 HIGH | Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software IP Fragme |
| CVE-2020-3528 | 8.6 HIGH | Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software OSPFv2 Li |
| CVE-2020-3529 | 8.6 HIGH | Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software SSL VPN D |
| CVE-2020-3572 | 8.6 HIGH | Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software SSL/TLS S |
| CVE-2020-3533 | 8.6 HIGH | Cisco Firepower Threat Defense Software SNMP Denial of Service Vulnerability |
| CVE-2020-3514 | 8.2 HIGH | Cisco Firepower Threat Defense Software Multi-Instance Container Escape Vulnerability |
| CVE-2020-3410 | 8.1 HIGH | Cisco Firepower Management Center Software Common Access Card Authentication Bypass Vulner |
| CVE-2020-3555 | 6.8 MEDIUM | Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software SIP Denia |
| CVE-2020-3581 | 6.1 MEDIUM | Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Servi |
| CVE-2020-3582 | 6.1 MEDIUM | Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Servi |
| CVE-2020-3583 | 6.1 MEDIUM | Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Servi |
| CVE-2020-3599 | 6.1 MEDIUM | Cisco Adaptive Security Appliance Software Web-Based Management Interface Reflected Cross- |
| CVE-2020-3580 | 6.1 MEDIUM | Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Servi |
| CVE-2020-3565 | 5.8 MEDIUM | Cisco Firepower Threat Defense Software TCP Intercept Bypass Vulnerability |
| CVE-2020-3585 | 5.3 MEDIUM | Cisco Firepower 1000 Series Bleichenbacher Attack Vulnerability |
| CVE-2020-3578 | 5.3 MEDIUM | Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software WebVPN Po |
| CVE-2020-3557 | 5.3 MEDIUM | Cisco Firepower Management Center Software Denial of Service Vulnerability |
| CVE-2020-3558 | 4.7 MEDIUM | Cisco Firepower Management Center Software Open Redirect Vulnerability |
| CVE-2020-3299 | Multiple Cisco Products SNORT HTTP Detection Engine File Policy Bypass Vulnerability |
Showing top 20 of 40 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
- CVE-2026-20219
Cisco Slido 安全漏洞 - CVE-2026-20034
Cisco Unity Connection Remote Code Execution Vulnerability - CVE-2026-20035
Cisco Unity Connection Server-Side Request Forgery Vulnerabi - CVE-2026-20167
Cisco IoT Field Network Director Remote Device Denial of Ser - CVE-2026-20169
Cisco IoT Field Network Director Command Injection Vulnerabi
Same weakness: CWE-119
- CVE-2026-22167
GPU DDK - Cache resident PM buffers writable by other GPU re - CVE-2026-27890
Firebird has Pre-Auth DOS when Processing Out of Order CNCT_ - CVE-2026-34864
Huawei HarmonyOS 安全漏洞 - CVE-2026-4149
Sonos Era 300 SMB Response Out-Of-Bounds Access Remote Code - CVE-2026-34988
Wasmtime leaks data between pooling allocator instances
V. Comments for CVE-2020-3562
No comments yet