Cisco Fixes Actively Exploited Zero-Day CVE-2026-20045 in Unified CM and Webex

Cisco Fixes Actively Exploited Zero-Day CVE-2026-20045 in Unified CM and Webex

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Cisco has released fresh patches to address what it described as a “critical” security vulnerability impacting multiple Unified Communications (CM) products and Webex Calling Dedicated Instance that it has been actively exploited as a zero-day in the wild.
The vulnerability, CVE-2026-20045 (CVSS score: 8.2), could permit an unauthenticated remote attacker to execute arbitrary commands on the

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