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CRITICAL: THIS VULNERABILITY IS ACTIVELY BEING EXPLOITED IN THE WILD (CISA KEV CATALOG)
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CVE-2024-20353

Exploited

Cisco ASA - Web Server

Cisco CVSS 8.6 Updated March 16, 2026

Executive Risk Summary

"A vulnerability in the management and VPN web servers for Cisco Adaptive Security Appliance (ASA) Software and Cisco Firepower Threat Defense (FTD) Software could allow an unauthenticated, remote attacker to cause the device to reload unexpectedly, resulting in a denial of service (DoS) condition. This vulnerability is due to incomplete error checking when parsing an HTTP header, and can be exploited by sending a crafted HTTP request to a targeted web server on a device."

Operational Audit Arsenal

Target Type Firmware Image
Target Asset ASA/FTD Web Server
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-2024-20353: Unauthenticated DoS vulnerability in Cisco ASA/FTD Web Server, requires firmware update to prevent device reload

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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.