CISCO: 🔗 Reference: Cisco Security Advisory for NX-API RCE (CVE-2026-76471)

CISCO Security Advisory

Published Date: Not specified

CVE: CVE-2026-76471

Advisory Summary

🗓️ Calendar: October 8, 2026

📌 ➡️ Cisco NX-OS NX-API Remote Code Execution (RCE) — Critical

• Execute arbitrary code as root
• Or trigger denial of service (DoS) via process crashes that may lead to device reload

• Insufficient input validation for data sent through NX-API.
• The attacker sends a crafted HTTP request to the NX-API endpoint on an affected device.

• If NX-API is reachable from untrusted networks (or directly exposed), threat actors may attempt exploitation without authentication.
• Successful exploitation could yield full device compromise (root) or instability leading to reload/DoS.

• ✅ Cisco has released software updates that address the vulnerability.
• ⚠️ No workaround is provided—mitigation depends on remediation via the patched NX-OS release.

• CVE-2026-76471

• Restrict management access (allowlist management IPs)
• Ensure NX-API is not reachable from the public internet or untrusted segments

-OS -API

Reference: Vendor Advisory