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Cisco Secure Firewall Adaptive Security Appliance (ASA) Software — Vulnerabilities & Security Advisories 44

All 44 CVE vulnerabilities found in Cisco Secure Firewall Adaptive Security Appliance (ASA) Software, with AI-generated Chinese analysis, references, and POCs.

This page aggregates security vulnerabilities affecting Cisco Secure Firewall Adaptive Security Appliance (ASA) Software, classifying them by Common Weakness Enumeration (CWE) categories to highlight recurring failure patterns. It collects publicly disclosed flaws for this specific product line, spanning its entire documented vulnerability history. Readers can use this aggregation to track the vendor's security advisories over time, analyze the prevalence of specific weakness classes within the product, and review the complete chronology of identified defects without being limited to individual CVE identifiers.

Vendor: Cisco

CVE ID Title CVSS Severity Published
CVE-2026-20121 CIsco FTD Bypass Access List CWE-284 5.3 Medium 2026-09-16
CVE-2026-20120 Cisco FTD ACL bypass vulnerability CWE-284 5.8 Medium 2026-09-16
CVE-2026-20248 Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software TCP DNS Denial of Service Vulnerability CWE-195 6.8 Medium 2026-09-16
CVE-2026-20333 Cisco Secure Adaptive Security Appliance Software, Secure Firewall Threat Defense Software and Secure Firewall Management Center Software Hardening Release - Incorrect Comparison Vulnerabilities CWE-697 8.8 High 2026-09-16
CVE-2026-20334 Cisco Secure Adaptive Security Appliance Software, Secure Firewall Threat Defense Software and Secure Firewall Management Center Software Hardening Release - Coding Standards Vulnerabilities CWE-710 8.4 High 2026-09-16
CVE-2026-20332 Cisco Secure Adaptive Security Appliance Software, Secure Firewall Threat Defense Software and Secure Firewall Management Center Software Hardening Release - Improper Access Control Vulnerabilities CWE-284 9.9 Critical 2026-09-16
CVE-2026-20154 Cisco Secure Firewall Adaptive Security Appliance Software and Secure Firewall Threat Defense Software Logging Denial of Service CWE-835 8.6 High 2026-09-16
CVE-2026-20222 Cisco Secure Adaptive Security Appliance Software and Secure Firewall Threat Defense Software EIGRP Denial of Service Vulnerability CWE-401 7.4 High 2026-09-16
CVE-2026-20336 Cisco Secure Adaptive Security Appliance Software, Secure Firewall Threat Defense Software and Secure Firewall Management Center Software Hardening Release - Resource Lifetime Management Vulnerabilities CWE-664 8.8 High 2026-09-16
CVE-2026-20249 Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software IKEv2 Certificate Authentication Denial of Service Vulnerability CWE-704 8.6 High 2026-09-16
CVE-2026-20335 Cisco Secure Adaptive Security Appliance Software, Secure Firewall Threat Defense Software and Secure Firewall Management Center Software Hardening Release - Incorrect Calculation Vulnerabilities CWE-682 8.1 High 2026-09-16
CVE-2026-20250 Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software for Firepower 3100 and 4200 Series DTLS Denial of Service Vulnerability CWE-772 8.6 High 2026-09-16
CVE-2026-20330 Cisco Secure Adaptive Security Appliance Software, Secure Firewall Threat Defense Software and Secure Firewall Management Center Software Hardening Release - Improper Neutralization Vulnerabilities CWE-707 9.9 Critical 2026-09-16
CVE-2026-20329 Cisco Secure Adaptive Security Appliance Software, Secure Firewall Threat Defense Software and Secure Firewall Management Center Software Hardening Release - Exceptional Conditions Handling Vulnerabilities CWE-703 9.9 Critical 2026-09-16
CVE-2026-20331 Cisco Secure Adaptive Security Appliance Software, Secure Firewall Threat Defense Software and Secure Firewall Management Center Software Hardening Release - Protection Mechanism Failure Vulnerabilities CWE-693 9.6 Critical 2026-09-16
CVE-2026-20349 Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software Remote Access SSL VPN Denial of Service Vulnerability CWE-244 8.6 High 2026-08-11
CVE-2026-20025 Cisco Secure Firewall Adaptive Security Appliance和Cisco Secure Firewall Threat Defense 输入验证错误漏洞 CWE-190 6.8 Medium 2026-03-04
CVE-2026-20024 Cisco Secure Firewall Adaptive Security Appliance和Cisco Secure Firewall Threat Defense 缓冲区错误漏洞 CWE-119 6.8 Medium 2026-03-04
CVE-2026-20023 Cisco Secure Firewall Adaptive Security Appliance和Cisco Secure Firewall Threat Defense 缓冲区错误漏洞 CWE-787 6.1 Medium 2026-03-04
CVE-2026-20022 Cisco Secure Firewall Adaptive Security Appliance和Cisco Secure Firewall Threat Defense 安全漏洞 CWE-823 6.1 Medium 2026-03-04
CVE-2026-20021 Cisco Secure Firewall Adaptive Security Appliance和Cisco Secure Firewall Threat Defense 安全漏洞 CWE-401 4.3 Medium 2026-03-04
CVE-2026-20020 Cisco Secure Firewall Adaptive Security Appliance和Cisco Secure Firewall Threat Defense 输入验证错误漏洞 CWE-20 6.8 Medium 2026-03-04
CVE-2026-20073 Cisco Secure Firewall Adaptive Security Appliance Software and Cisco Secure Firewall Threat Defense Software Access Control List Bypass Vulnerability CWE-284 5.8 Medium 2026-03-04
CVE-2026-20102 Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software SAML Reflected Cross-Site Scripting Vulnerability CWE-79 6.1 Medium 2026-03-04
CVE-2026-20070 Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software VPN Web Services Cross-Site Scripting Vulnerability CWE-80 6.1 Medium 2026-03-04
CVE-2026-20069 Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software VPN Web Services Client-Side Request Smuggling Vulnerability CWE-444 4.3 Medium 2026-03-04
CVE-2026-20082 Cisco Secure Firewall Adaptive Security Appliance 安全漏洞 CWE-772 8.6 High 2026-03-04
CVE-2026-20062 Cisco Secure Firewall Adaptive Security Appliance 安全漏洞 CWE-279 7.2 High 2026-03-04
CVE-2026-20049 Cisco Secure Firewall Adaptive Security Appliance和Cisco Secure Firewall Threat Defense 安全漏洞 CWE-131 7.7 High 2026-03-04
CVE-2026-20015 Cisco Secure Firewall Adaptive Security Appliance和Cisco Secure Firewall Threat Defense 安全漏洞 CWE-401 5.8 Medium 2026-03-04

All 44 known CVE vulnerabilities affecting Cisco Secure Firewall Adaptive Security Appliance (ASA) Software with full Chinese analysis, references, and POCs where available.