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CVE-2024-20426

Cisco ASA - IKEv2

Cisco CVSS 8.6 Updated March 16, 2026

Executive Risk Summary

"A vulnerability in the Internet Key Exchange version 2 (IKEv2) protocol for VPN termination of Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. An attacker could exploit this vulnerability by sending crafted IKEv2 traffic to an affected device, causing the device to reload and resulting in a DoS condition."

Operational Audit Arsenal

Target Type Firmware Image
Target Asset ASA/FTD Firmware
Standard Path Global Firmware

Manual Verification Required

This is a non-Windows asset (Cisco). Use the target asset details and official path provided above to verify your current version against the official vendor advisories listed below.

Patch Impact Forecast

Reboot Required Likely

High

Internal Work Notes

CVE-2024-20426: Unauthenticated DoS vulnerability in Cisco ASA/FTD IKEv2, requires firmware update to prevent device reload and potential network disruption.

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Intelligence Sources

Related Cisco Threats

Data compiled from NVD, MSRC, and CISA KEV Catalog. Intelligence synthesized via AI. Scripts provided for diagnostic purposes under MIT License.