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CVE-2024-20312

Cisco IOS XE - IS-IS Protocol

Cisco CVSS 7.4 Updated March 16, 2026

Executive Risk Summary

"A vulnerability in the Intermediate System-to-Intermediate System (IS-IS) protocol of Cisco IOS Software and Cisco IOS XE Software could allow an unauthenticated, adjacent attacker to cause a denial of service (DoS) condition on an affected device. The attacker must be Layer 2-adjacent to the affected device and have formed an adjacency to exploit this vulnerability."

Operational Audit Arsenal

Target Type Firmware Image
Target Asset Cisco IOS XE Image
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 disruption possible due to device reload

Internal Work Notes

CVE-2024-20312: IS-IS Protocol Vulnerability in Cisco IOS XE - Potential for Denial of Service (DoS) condition, requiring adjacent attacker with formed adjacency.

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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.