Cisco Nexus 3000 and 9000 Series Vulnerability Let Attackers Trigger DoS Attack

Cisco has issued a High-severity security advisory alerting customers to a critical vulnerability in the Intermediate System-to-Intermediate System (IS-IS) feature of NX-OS Software for Cisco Nexus 3000 and 9000 Series switches.  Tracked as CVE-2025-20241 with a CVSS base score of 7.4, the flaw could allow an unauthenticated, Layer 2-adjacent attacker to send a malformed IS-IS […]

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