Cisco warns of critical flaw in Unified Communications Manager – so you better patch now

Cisco warns of critical flaw in Unified Communications Manager – so you better patch now

For Immediate Release
2025-07-04 11:45:00

Cisco has released patches for a maximum-severity security flaw in Unified Communications Manager (Unified CM) and Unified Communications Manager Session Management Edition (Unified CM SME).

The vulnerability, CVE-2025-20309, carries a CVSS score…

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