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Sead Fadilpašić

UNBELIEVABLE: Cisco warns of critical sd wan security flaw which has been open since 2023 | History Defined

Avast cybersecurity.

  • Cisco Catalyst SD-WAN zero-day (CVE-2026-20127) being exploited since 2023
  • Flaw allowed attackers to add rogue peers and manipulate network configs
  • CISA added bug to KEV catalog, ordering urgent patching; linked to threat group UAT-8616
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