A New SonicWall Scanning Spike Echoes the Pattern That Preceded CVE-2026-0400 A new SonicWall scanning surge mirrors the pattern that preceded CVE-2026-0400. GreyNoise details the activity and what defenders should watch. EPSS 0.00 CVE-2026-0400 SonicWall US GreyNoise Labs · 21. 5. 02:00