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Microsoft patches critical vulnerability in Entra ID following active exploitation
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Fusion42 · 21 August 2026 · Fusion42 review
Microsoft patched a critical remote code execution vulnerability in Entra ID, its identity management service for Microsoft 365, Azure, and Dynamics CRM Online, after active exploitation was discovered. The fix has been fully implemented without requiring any user action, and no public exploit code is available.
This Wire brief sits within Fusion42's coverage of Cybersecurity, and 2 sources have reported it.
◆ ◆ The Wire takeaway
You must review how your security products integrate with Entra ID as exploitation shows attackers can breach critical identity layers remotely. Microsoft forcing automatic fixes means the risk window is tight but exposure remains for lagging integrations.
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2 sources · 21 Aug 2026
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