Frequency
2
occurrences
First Seen
January 21, 2026
Last Seen
January 23, 2026
Webex Calling is Cisco's cloud-based enterprise voice service, part of the Cisco Unified Communications (UC) portfolio.
Overview
Webex Calling is Cisco's cloud-based enterprise voice service, part of the Cisco Unified Communications (UC) portfolio. It integrates VoIP calling with collaboration features and relies on UC infrastructure; vulnerabilities in UC components can enable exploitation across Webex Calling deployments, making timely patches and monitoring critical for cybersecurity.
Related Threat Clusters
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Cisco Patches Critical Zero-Day in Unified Communications and Webex Calling
Cisco has addressed a critical zero-day remote code execution vulnerability (CVE-2026-20045) in its Unified Communications and Webex Calling platforms. This flaw, which has a CVSS score of 8.2, is actively exploited by…
2 articles · Updated January 23, 2026
Recent Intelligence Reports
- Cisco Fixes Active Unified Communications Zero-Day — Techworm · January 23, 2026
- Cisco fixed actively exploited Unified Communications zero day — Securityaffairs.Co · January 21, 2026