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Cisco Firewall Vulnerabilities Exploited by China-Linked Hackers

First seen 2 Dec 2025, 18:33 UTC •GovinfosecurityBankinfosecurity •8

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Multiple federal agencies failed to secure Cisco firewalls, leading to exploitation by China-linked hackers. The U.S. Cybersecurity and Infrastructure Security Agency (CISA) issued new patch guidance but did not attribute the attacks to a specific threat actor. Palo Alto Networks is involved in assessing the cybersecurity implications of these vulnerabilities.

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