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Posted by Redaktion
 - Today at 13:47:04
Microsoft has released an out-of-band security update to fix an actively exploited Microsoft Office vulnerability tracked as CVE-2026-21509. The flaw allows attackers to bypass Office security protections via malicious documents and has been added to CISA's Known Exploited Vulnerabilities catalog.

https://www.notebookcheck.net/Microsoft-issues-out-of-band-patch-for-actively-exploited-Microsoft-Office-zero-day-vulnerability.1213488.0.html