The U.S. government and its allies said hackers have been exploiting the newly identified bug in Cisco networking gear around the world for years, and urged organizations to patch.

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A critical severity 10.0 vulnerability in Cisco's Catalyst SD-WAN products has been actively exploited by hackers since at least 2023, allowing remote attackers to gain highest-level permissions and maintain persistent hidden access in victim networks. Affected organizations include critical infrastructure. The U.S. (CISA), Australia, Canada, New Zealand, and the UK have issued urgent alerts, with CISA ordering federal agencies to patch by end of day Friday. The activity is tracked as UAT-8616, though no specific nation-state attribution has been made.

Cisco says hackers have been exploiting a critical bug to break into big customer networks since 2023