CVE-2026-20082 - Vulnerability Analysis

Overview

Cisco Secure Firewall Adaptive Security Appliance (ASA) Software contains a denial of service vulnerability caused by improper handling of embryonic TCP connections under SYN flood attack, letting unauthenticated remote attackers drop incoming TCP SYN packets, exploit requires sending crafted traffic.

Severity & Score

Impact

Attackers can cause denial of service by preventing all incoming TCP connections, including remote management and VPN access.

Mitigation

Update to the latest available version of Cisco Secure Firewall Adaptive Security Appliance Software.

References

• https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-asa-dos-FCvLD6vR

Related Resources

• Vulnerability Intelligence Dashboard
• Credential Scanner