This vulnerability arises from a flaw in the system rate-limiting process for syslog message 419002 in Cisco ASA and FTD software. An attacker can exploit this by sending a flood of TCP synchronization (SYN) packets, triggering an infinite loop or excessive processing that results in high CPU usage. This condition degrades device performance and can cause denial of service. The vulnerability affects multiple specific versions of Cisco ASA software as enumerated in the affectedVersions list. There is no indication of known exploits in the wild or vendor-provided patch information in the provided data.

An unauthenticated remote attacker can cause high CPU utilization on affected Cisco ASA or FTD devices by exploiting improper rate limiting of a specific syslog message. This results in denial of service due to performance degradation, potentially impacting network security and availability.

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is available, consider implementing network-level protections such as filtering or rate limiting TCP SYN floods targeting the affected devices to reduce the risk of exploitation.