# Cisco Secure Firewall Adaptive Security Appliance (Asa) vulnerabilities

Source: https://junglewise.ai/threats/technologies/secure-firewall-adaptive-security-appliance-asa  
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.json  
License: CC BY 4.0 with a link back

Junglewise Threat Intelligence has tracked 3 vulnerabilities in Cisco Secure Firewall Adaptive Security Appliance (Asa): 0 in the last 7 days and 1 in the last 90 days, 1 of them critical and 1 exploited in the wild. The most recent, CVE-2026-20222, was published on 16 September 2026. Nothing in the last four weeks, down from 1 vulnerability in the four before.

## Counts

- Last 7 days: 0
- Last 30 days: 0
- Last 90 days: 1
- All time: 3 (1 critical, 1 exploited in the wild)

## About Cisco Secure Firewall Adaptive Security Appliance (Asa)

Network security appliance providing firewall, VPN, and intrusion prevention capabilities.

## Latest Cisco Secure Firewall Adaptive Security Appliance (Asa) vulnerabilities

- [CVE-2026-20222: Cisco Secure Firewall ASA and FTD EIGRP denial of service](https://junglewise.ai/threats/cve-2026-20222-cisco-secure-firewall-asa-and-ftd-eigrp-denial-of-service) (high, CVSS 7.4, published 16 Sep 2026)
- [CVE-2026-20349: Cisco Secure Firewall ASA and FTD denial of service in SSL VPN](https://junglewise.ai/threats/cve-2026-20349-cisco-secure-firewall-asa-and-ftd-denial-of-service-in-ssl-vpn) (critical, exploited in the wild, CVSS 8.6, published 11 Aug 2026)
- [CVE-2026-20039: Cisco Secure Firewall ASA and FTD VPN web server denial of service](https://junglewise.ai/threats/cve-2026-20039-cisco-secure-firewall-asa-and-ftd-vpn-web-server-denial-of) (high, CVSS 8.6, published 4 Mar 2026)

## Most severe Cisco Secure Firewall Adaptive Security Appliance (Asa) vulnerabilities

- [CVE-2026-20349: Cisco Secure Firewall ASA and FTD denial of service in SSL VPN](https://junglewise.ai/threats/cve-2026-20349-cisco-secure-firewall-asa-and-ftd-denial-of-service-in-ssl-vpn) (critical, exploited in the wild, CVSS 8.6, published 11 Aug 2026)
- [CVE-2026-20039: Cisco Secure Firewall ASA and FTD VPN web server denial of service](https://junglewise.ai/threats/cve-2026-20039-cisco-secure-firewall-asa-and-ftd-vpn-web-server-denial-of) (high, CVSS 8.6, published 4 Mar 2026)
- [CVE-2026-20222: Cisco Secure Firewall ASA and FTD EIGRP denial of service](https://junglewise.ai/threats/cve-2026-20222-cisco-secure-firewall-asa-and-ftd-eigrp-denial-of-service) (high, CVSS 7.4, published 16 Sep 2026)

## Vulnerabilities per week

Nothing in the last four weeks, down from 1 vulnerability in the four before.

| 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 | 1 | 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 | 0 | 0 | 0 |
| 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) vulnerabilities", https://junglewise.ai/threats/technologies/secure-firewall-adaptive-security-appliance-asa, 11 November 2026.