PT-2026-5123 · Undefined · Undefined
Published
2026-01-28
·
Updated
2026-01-28
·
CVE-2021-21509
None
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Microsoft has issued an emergency patch for a zero-day vulnerability (CVE-2021-21509) in Office, allowing attackers to bypass OLE mitigations and execute malware. CISA has included the flaw in their KEV catalog. #Microsoft #Office #SecurityPatch #ZeroDayVulnerability https://t.co/WMeToNOuIK
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Affected Products
Undefined