# Cisco Secure Firewall Adaptive Security Appliance (ASA) Software vulnerabilities Source: https://junglewise.ai/threats/technologies/secure-firewall-adaptive-security-appliance-asa-software Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats Updated: 11 November 2026, 03:07 UTC. Rebuilt every hour. Data: https://junglewise.ai/threats/technologies/secure-firewall-adaptive-security-appliance-asa-software.json License: CC BY 4.0 with a link back Junglewise Threat Intelligence has tracked 9 vulnerabilities in Cisco Secure Firewall Adaptive Security Appliance (ASA) Software: 0 in the last 7 days and 3 in the last 90 days, 1 of them critical and 1 exploited in the wild. The most recent, CVE-2026-76418, was published on 28 October 2026. 1 vulnerability in the last four weeks, down 50% on the four before (2). 1 critical against 0, 1 exploited in the wild against 0. ## Counts - Last 7 days: 0 - Last 30 days: 1 - Last 90 days: 3 - All time: 9 (1 critical, 1 exploited in the wild) ## About Cisco Secure Firewall Adaptive Security Appliance (ASA) Software Cisco firewall software providing network security filtering and threat protection capabilities. ## Latest Cisco Secure Firewall Adaptive Security Appliance (ASA) Software vulnerabilities - [CVE-2026-76418: Cisco Secure Firewall ASA and FTD SSL VPN denial of service](https://junglewise.ai/threats/cve-2026-76418-a-vulnerability-in-the-remote-access-ssl-vpn-service-of-cisco) (critical, exploited in the wild, CVSS 8.6, published 28 Oct 2026) - [CVE-2026-20248: Cisco Secure Firewall ASA/FTD DNS over TCP denial of service](https://junglewise.ai/threats/cve-2026-20248-cisco-secure-firewall-asa-ftd-dns-over-tcp-denial-of-service) (medium, CVSS 6.8, published 16 Sep 2026) - [CVE-2026-20154: Cisco Secure Firewall ASA/FTD denial of service in syslog rate limiting](https://junglewise.ai/threats/cve-2026-20154-cisco-secure-firewall-asa-ftd-denial-of-service-in-syslog-rate) (high, CVSS 8.6, published 16 Sep 2026) - [CVE-2026-20023: Cisco Secure Firewall ASA and FTD OSPF memory corruption denial of service](https://junglewise.ai/threats/cve-2026-20023-cisco-secure-firewall-asa-and-ftd-ospf-memory-corruption-denial) (medium, CVSS 6.1, published 4 Mar 2026) - [CVE-2026-20106: Cisco Secure Firewall ASA and FTD SSL VPN denial of service](https://junglewise.ai/threats/cve-2026-20106-cisco-secure-firewall-asa-and-ftd-ssl-vpn-denial-of-service) (medium, CVSS 5.3, published 4 Mar 2026) - [CVE-2026-20105: Cisco Secure Firewall ASA and FTD Remote Access SSL VPN denial of service](https://junglewise.ai/threats/cve-2026-20105-cisco-secure-firewall-asa-and-ftd-remote-access-ssl-vpn-denial-of) (high, CVSS 7.7, published 4 Mar 2026) - [CVE-2026-20103: Cisco Secure Firewall ASA and FTD Remote Access SSL VPN denial of service](https://junglewise.ai/threats/cve-2026-20103-cisco-secure-firewall-asa-and-ftd-remote-access-ssl-vpn-denial-of) (high, CVSS 8.6, published 4 Mar 2026) - [CVE-2026-20049: Cisco Secure Firewall IPsec GCM buffer overflow denial of service](https://junglewise.ai/threats/cve-2026-20049-cisco-secure-firewall-ipsec-gcm-buffer-overflow-denial-of-service) (high, CVSS 7.7, published 4 Mar 2026) - [CVE-2026-20008: Cisco Secure Firewall ASA and FTD Lua code injection in CLI commands](https://junglewise.ai/threats/cve-2026-20008-cisco-secure-firewall-asa-and-ftd-lua-code-injection-in-cli) (medium, CVSS 6, published 4 Mar 2026) ## Most severe Cisco Secure Firewall Adaptive Security Appliance (ASA) Software vulnerabilities - [CVE-2026-76418: Cisco Secure Firewall ASA and FTD SSL VPN denial of service](https://junglewise.ai/threats/cve-2026-76418-a-vulnerability-in-the-remote-access-ssl-vpn-service-of-cisco) (critical, exploited in the wild, CVSS 8.6, published 28 Oct 2026) - [CVE-2026-20154: Cisco Secure Firewall ASA/FTD denial of service in syslog rate limiting](https://junglewise.ai/threats/cve-2026-20154-cisco-secure-firewall-asa-ftd-denial-of-service-in-syslog-rate) (high, CVSS 8.6, published 16 Sep 2026) - [CVE-2026-20103: Cisco Secure Firewall ASA and FTD Remote Access SSL VPN denial of service](https://junglewise.ai/threats/cve-2026-20103-cisco-secure-firewall-asa-and-ftd-remote-access-ssl-vpn-denial-of) (high, CVSS 8.6, published 4 Mar 2026) - [CVE-2026-20105: Cisco Secure Firewall ASA and FTD Remote Access SSL VPN denial of service](https://junglewise.ai/threats/cve-2026-20105-cisco-secure-firewall-asa-and-ftd-remote-access-ssl-vpn-denial-of) (high, CVSS 7.7, published 4 Mar 2026) - [CVE-2026-20049: Cisco Secure Firewall IPsec GCM buffer overflow denial of service](https://junglewise.ai/threats/cve-2026-20049-cisco-secure-firewall-ipsec-gcm-buffer-overflow-denial-of-service) (high, CVSS 7.7, published 4 Mar 2026) - [CVE-2026-20248: Cisco Secure Firewall ASA/FTD DNS over TCP denial of service](https://junglewise.ai/threats/cve-2026-20248-cisco-secure-firewall-asa-ftd-dns-over-tcp-denial-of-service) (medium, CVSS 6.8, published 16 Sep 2026) - [CVE-2026-20023: Cisco Secure Firewall ASA and FTD OSPF memory corruption denial of service](https://junglewise.ai/threats/cve-2026-20023-cisco-secure-firewall-asa-and-ftd-ospf-memory-corruption-denial) (medium, CVSS 6.1, published 4 Mar 2026) - [CVE-2026-20008: Cisco Secure Firewall ASA and FTD Lua code injection in CLI commands](https://junglewise.ai/threats/cve-2026-20008-cisco-secure-firewall-asa-and-ftd-lua-code-injection-in-cli) (medium, CVSS 6, published 4 Mar 2026) - [CVE-2026-20106: Cisco Secure Firewall ASA and FTD SSL VPN denial of service](https://junglewise.ai/threats/cve-2026-20106-cisco-secure-firewall-asa-and-ftd-ssl-vpn-denial-of-service) (medium, CVSS 5.3, published 4 Mar 2026) ## Vulnerabilities per week 1 vulnerability in the last four weeks, down 50% on the four before (2). 1 critical against 0, 1 exploited in the wild against 0. | Week of | Vulns | Critical | Exploited | | --- | --- | --- | --- | | 17 Aug 2026 | 0 | 0 | 0 | | 24 Aug 2026 | 0 | 0 | 0 | | 31 Aug 2026 | 0 | 0 | 0 | | 7 Sep 2026 | 0 | 0 | 0 | | 14 Sep 2026 | 2 | 0 | 0 | | 21 Sep 2026 | 0 | 0 | 0 | | 28 Sep 2026 | 0 | 0 | 0 | | 5 Oct 2026 | 0 | 0 | 0 | | 12 Oct 2026 | 0 | 0 | 0 | | 19 Oct 2026 | 0 | 0 | 0 | | 26 Oct 2026 | 1 | 1 | 1 | | 2 Nov 2026 | 0 | 0 | 0 | | 9 Nov 2026 | 0 | 0 | 0 | ## Other Cisco technologies - [Cisco IOS](https://junglewise.ai/threats/technologies/ios): 70 vulnerabilities - [Cisco Identity Services Engine](https://junglewise.ai/threats/technologies/identity-services-engine): 58 vulnerabilities - [Cisco IOS XE](https://junglewise.ai/threats/technologies/ios-xe): 57 vulnerabilities - [Cisco Firepower Threat Defense](https://junglewise.ai/threats/technologies/firepower-threat-defense): 33 vulnerabilities - [Cisco Firepower Threat Defense Software](https://junglewise.ai/threats/technologies/firepower-threat-defense-software): 33 vulnerabilities - [Cisco IOS XR](https://junglewise.ai/threats/technologies/ios-xr): 31 vulnerabilities - [Cisco IOS XE Software](https://junglewise.ai/threats/technologies/ios-xe-software): 28 vulnerabilities - [Cisco Adaptive Security Appliance Software](https://junglewise.ai/threats/technologies/secure-firewall-asa-software): 23 vulnerabilities - [Cisco Snort 3](https://junglewise.ai/threats/technologies/snort-3): 20 vulnerabilities - [Cisco Ios Software](https://junglewise.ai/threats/technologies/ios-software): 19 vulnerabilities - [Cisco ISE Passive Identity Connector](https://junglewise.ai/threats/technologies/ise-passive-identity-connector): 19 vulnerabilities - [Cisco Secure Firewall Management Center](https://junglewise.ai/threats/technologies/secure-firewall-management-center): 16 vulnerabilities ## Sources NVD, GitHub Security Advisories, OSV, the CISA Known Exploited Vulnerabilities catalog, FIRST EPSS and vendor advisories. Rebuilt every hour. Cite as: Junglewise Threat Intelligence, "Cisco Secure Firewall Adaptive Security Appliance (ASA) Software vulnerabilities", https://junglewise.ai/threats/technologies/secure-firewall-adaptive-security-appliance-asa-software, 11 November 2026.