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CVE-2024-20267

Cisco NX-OS Software - Netstack

Cisco CVSS 8.6 Updated March 16, 2026

Executive Risk Summary

"A vulnerability in the handling of MPLS traffic for Cisco NX-OS Software could allow an unauthenticated, remote attacker to cause a denial of service (DoS) condition. This vulnerability is due to lack of proper error checking when processing an ingress MPLS frame, and can be exploited by sending a crafted IPv6 packet encapsulated within an MPLS frame to an MPLS-enabled interface of the targeted device."

Operational Audit Arsenal

Target Type Firmware Image
Target Asset Netstack
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 traffic disruption or device reload

Internal Work Notes

CVE-2024-20267: Potential DoS vulnerability in Cisco NX-OS Software - Netstack, requiring firmware update to prevent exploitation via crafted IPv6 packets in MPLS frames.

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Intelligence Sources

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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.