Chained vulnerabilities in Cisco Catalyst switches could induce denial-of-service

Chained vulnerabilities in Cisco Catalyst switches could induce denial-of-service

Cisco’s widely deployed Catalyst 9300 Series enterprise switches have four security vulnerabilities, two of which could be chained to cause a denial-of-service outage, infrastructure security company Opswat has revealed. The two most operationally significant are CVE-2026-20114 and CVE-2026-20110, which the researchers found could be chained to make possible a dangerous privilege escalation. Opswat’s Unit 515 Critical Infrastructure Protection (…