Emergency Patch Released for Microsoft Office Due to Exploited Vulnerability

Emergency Patch Released for Microsoft Office Due to Exploited Vulnerability

First seen 27 Jan 2026, 08:54 UTC •Uk.Pcmag •47.9

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Microsoft has issued an emergency patch for a vulnerability, CVE-2026-21509, affecting Microsoft 365 Apps for Enterprise and Office 2019 and 2016. The flaw is currently being exploited in phishing attacks targeting vulnerable systems. Users are advised to update their software to mitigate the risk.

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