A cyber threat actor has been exploiting a zero-day vulnerability (CVE-2026-20127) in Cisco Catalyst SD-WAN Controller since 2023. This vulnerability allows unauthenticated remote attackers to bypass authentication and…
104 articles · Updated February 25, 2026
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The Three-Year Shadow: Critical CVSS 10 Cisco SD-WAN Zero-Day Exploited by UAT— Linkedin · February 26, 2026