A security vulnerability in Microsoft Word for Mac (CVE-2026-45466) allows information disclosure, potentially exposing sensitive data from affected documents. Microsoft has released security updates for Microsoft Office for Mac to address the issue. Only users running the affected Mac versions of Office need to act; other platforms are unaffected.

Security Architect’s Take: Ensure any managed Mac endpoints running Microsoft Office are updated promptly via your MDM solution or patch management tooling. Verify compliance reporting confirms the patch has been applied across your Mac fleet, particularly for users handling sensitive or confidential documents.

Original advisory: CVE-2026-45466 Microsoft Word Information Disclosure Vulnerability