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Advanced Threat Actor Exploits Cisco and Citrix Zero-Days

First seen 12 Nov 2025, 19:02 UTC • Cybersecuritynews

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An advanced hacker has been identified exploiting zero-day vulnerabilities in Cisco and Citrix products. The threat actor's activities were reported by CJ Moses, CISO of Amazon Integrated Security, highlighting the severity of the situation as these vulnerabilities were previously undisclosed.

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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

Advanced Threat Actor Exploits Cisco and Citrix Zero-Days

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