THREAT OPS › Threat News › [CISA KEV] CVE-2026-20349 — Cisco Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) : Cisco Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) Heap Inspection Vulnerability
[CISA KEV] CVE-2026-20349 — Cisco Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) : Cisco Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) Heap Inspection Vulnerability
CVE: CVE-2026-20349 Vendor: Cisco Product: Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) Vulnerability: Cisco Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) Heap Inspection Vulnerability Date Added: 2026-08-11 Required Action: Apply mitigations in accordance with vendor instructions, ensuring compliance with
MITRE ATT&CK techniques
- Cloud ServicesT1021.007
Indicators of compromise
- CVE-2026-20349cve
- https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asaftd-vpn-dos-dzv4mQFFurl
Original source: https://nvd.nist.gov/vuln/detail/CVE-2026-20349