Microsoft SharePoint vulnerability impacts U.S. nuclear agency systems

Published 23/07/2025, 18:24
© Reuters.

Investing.com -- The U.S. Department of Energy reported that a Microsoft (NASDAQ:MSFT) SharePoint zero-day vulnerability affected some of its systems on July 18, including those belonging to the National Nuclear Security Administration, which oversees the nation’s nuclear weapons stockpile.

In an emailed statement on Wednesday, the department said it was "minimally impacted" by the security breach, attributing this to its widespread use of Microsoft M365 cloud services and its "very capable cybersecurity systems."

The agency noted that only "a very small number of systems were impacted" and assured that all affected systems are currently in the process of being restored.

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