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Microsoft security advisory – December 2025 monthly rollup (AV25-822)

ID: d50a7e0c-1997-5b84-9548-5c1d0be2630c

STIX ID: report--d50a7e0c-1997-5b84-9548-5c1d0be2630c

Feed Name: Canadian Centre for Cyber Security Alerts and Advisories

Threat Score
90/100

Date Published: 2025-12-09

Date Updated: 2026-06-11

Author: Canadian Centre for Cyber Security

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On December 9, 2025, Microsoft published security advisories and critical updates for a wide range of products—including Windows (client and server variants), Microsoft Office suites, SQL Server, Azure services, Visual Studio, and third-party products like Nuance PowerScribe—addressing multiple vulnerabilities. The advisory notes that CVE-2025-62221 is being actively exploited in the wild and urges users and administrators to review the provided links and apply the necessary updates promptly.

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