High 1 vendor · 1 advisory

CVE-2026-20039

CVE-2026-20039: high-severity vulnerability covered by 1 tracked advisory record across Cisco. Compare affected products, fixed versions and remediation.

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Cisco1 advisory

High8.6Cisco Secure Firewall Adaptive Security Appliance and Secure Firewall Threat Defense Software VPN Web Server Denial of Service VulnerabilityMar 4, 2026