Forbes May 18, 2026 • 13:21

Microsoft Confirms Active 0-Day Exploit—Check Emergency Mitigation Now - Forbes

By Davey Winder

Microsoft Confirms Active 0-Day Exploit—Check Emergency Mitigation Now - Forbes

Microsoft Exchange users are urged to mitigate a zero-day vulnerability that CISA has confirmed is under active exploitation.

Microsoft confirms Exchange zero-day, CISA warns it's under active exploitation.
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Updated May 18: This article has been updated to include further details on the emergency mitigation process r… [+6986 chars]

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