high Known exploited

CVE-2026-20349

Cisco Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) Heap Inspection Vulnerability

Cisco Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) contain a heap inspection vulnerability that could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition.

Published: Aug 11, 2026
Vendor: Cisco
Product: Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD)
CISA due date: 2026-08-14
Source: merged

References

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