Cisco · Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD)
Updated August 17, 2026
A heap inspection vulnerability in Cisco Secure Firewall Adaptive Security Appliance (ASA) and Secure Firewall Threat Defense (FTD) could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly. This vulnerability is significant because it can be exploited by an unauthenticated attacker, potentially causing network disruptions. The vulnerability's impact is increased due to its ease of exploitation.
If left unpatched, this vulnerability could lead to denial of service conditions, causing network disruptions and potential financial losses. Additionally, an attacker could exploit this vulnerability to gain access to sensitive information.
Apply the latest security patch from Cisco to mitigate this vulnerability. Ensure that all affected devices are updated as soon as possible to prevent potential attacks.
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