Cisco Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) Heap Inspection Vulnerability
CISA lists this Cisco Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat De… vulnerability as known exploited. The vendor's advisory has the fixed versions.
CISA catalog record
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.
- Product
- Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat De…
- Added to KEV
- 11 Aug 2026
- Federal remediation due
- 14 Aug 2026
- Known ransomware use
- Not reported
What changed
First observed 14 Oct 2026No field changes in the recorded history.
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