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CVE-2024-20455

Cisco IOS XE - Unified Threat Defense

Cisco CVSS 8.6 Updated March 16, 2026

Executive Risk Summary

"A vulnerability in Cisco IOS XE Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition on an affected device. The vulnerability exists because the Unified Threat Defense (UTD) component improperly handles certain packets as they egress an SD-WAN IPsec tunnel."

Operational Audit Arsenal

Target Type Firmware Image
Target Asset Cisco IOS XE
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

Network connectivity may be disrupted during the update process

Internal Work Notes

CVE-2024-20455: Cisco IOS XE Software UTD DoS vulnerability - verify version and apply patch to prevent remote denial of service attacks

Technical Intelligence & Operational Utilities • Delivered Weekly

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.