When Routers Become APT Targets: Analyzing Zero-Day CVE-2026-20127 Shakes Up Cisco SD-WAN Systems

6d ago · 5 min read · I. Overview At the beginning of 2026, a critical zero-day vulnerability identified as CVE-2026-20127 was announced, affecting the Cisco Catalyst SD-WAN Controller platform. With a maximum CVSS score o