China-Linked Hackers Exploit Cisco Vulnerabilities in U.S. Federal Networks

First seen 14 Nov 2025, 11:11 UTC • Govinfosecurity

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Multiple federal agencies failed to secure Cisco firewalls, allowing China-linked hackers to exploit vulnerabilities. The Cybersecurity and Infrastructure Security Agency (CISA) issued new patch guidance but has not attributed the attacks to a specific threat actor. Palo Alto Networks has provided insights into the ongoing situation.

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Cisco Fixes Critical AsyncOS Vulnerability Under Attack Cisco Zero-Day Vulnerability Exploited in Cyberattacks on Federal Networks China-linked APT UAT Exploits Cisco AsyncOS Flaw CVE-2025-20393 CISA Alerts on Exploited Cisco Unified CM Zero-Day Vulnerability CVE-2026-20045 Cisco Patches Critical Zero-Day in Unified Communications and Webex Calling Critical Zero-Day Vulnerability CVE-2026-20182 Exploited in Cisco SD-WAN Systems

China-Linked Hackers Exploit Cisco Vulnerabilities in U.S. Federal Networks

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