Cisco Addresses AsyncOS Zero-Day Exploited by Threat Actors

Cisco Addresses AsyncOS Zero-Day Exploited by Threat Actors

First seen 16 Jan 2026, 19:05 UTC •HelpnetsecurityThehackernewsSocradar •71% similarity •95.0

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Cisco has released fixes for CVE-2025-20393, a zero-day vulnerability in AsyncOS. This vulnerability has been exploited by suspected Chinese threat actors since November 2025, affecting users of Cisco's AsyncOS software.

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