Cisco has released security updates to address vulnerabilities in multiple Cisco products. An attacker could exploit one of these vulnerabilities to take control of an affected system.

Users are advised to review the following Cisco advisories and apply the necessary updates:

• Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Services Buffer Overflow Denial of Service Vulnerability – CVE-2021-1493

• Cisco Firepower Threat Defense Software SSL Decryption Policy Denial of Service Vulnerability - CVE-2021-1402

• Cisco Firepower Threat Defense Software Command Injection Vulnerability – CVE-2021-1448

• Cisco Adaptive Security Appliance Software and Firepower Threat Defense Software Web Services VPN Denial of Service Vulnerabilities – CVE-2021-1445, CVE-2021-1504

• Cisco Adaptive Security Appliance Software and Cisco Firepower Threat Defense Software SIP Denial of Service Vulnerability - CVE-2021-1501