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CVE-2024-20330

Cisco Firepower Threat Defense - Snort Detection Engine

Cisco CVSS 8.6 Updated March 16, 2026

Executive Risk Summary

"A vulnerability in the Snort 2 and Snort 3 TCP and UDP detection engine of Cisco Firepower Threat Defense Software could allow an unauthenticated, remote attacker to cause memory corruption, leading to a denial of service condition. The vulnerability is due to improper memory management when processing specific TCP or UDP packets, and a successful exploit could cause the Snort detection engine to restart unexpectedly, dropping traffic until the device is manually reloaded."

Operational Audit Arsenal

Target Type Firmware Component
Target Asset Snort Detection Engine
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

Traffic processed by the Snort detection engine may be dropped until the device is manually reloaded

Internal Work Notes

CVE-2024-20330: Unauthenticated remote attacker may cause memory corruption in Snort detection engine, leading to denial of service condition. Verify device firmware version and apply patch if necessary.

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