Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) vulnerabilities

Product

Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD)

by Cisco · last CVE Aug 11, 2026

On CISA KEVExploited in the wild

CVEs

On KEV

8.6

Max CVSS

New 30D

Vulnerabilities1 In the news5 Timeline

Severity mix

Critical 0High 1Medium 0Low 0

Severity

All severities1 Critical0 High1 Medium0 Low0

Exploitation

On CISA KEV1 Exploited in the wild1

Watch

Add Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) to your stack to get only the CVEs that touch what you run.

CVE	CVSS	EPSS	Published	Summary · affected versions
CVE-2026-20349 In wildKEV	8.6	1%	Aug 11	Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software Remote Access SSL VPN Denial of Service Vulnerability Affected: All versions, or not specified