If exploited, attackers can gain full access to SharePoint content and potentially pivot to Outlook, Teams, and OneDrive.

Microsoft says the Chinese threat actors Linen Typhoon, Violet Typhoon, and Storm-2603 have been exploiting the ToolShell zero-days.

Hackers with ties to the Chinese government have been linked to a recent wave of widespread attacks targeting a Microsoft ...

Microsoft has started releasing updates to fix the exploited SharePoint zero-days tracked as CVE-2025-53770 and ...

The term "zero-day" attack refers to when a previously unknown vulnerability is targeted. Tens of thousands of servers are ...

Patches for two vulnerable editions of Microsoft's on-premises SharePoint Server collaboration tool are now available, with ...

A security patch released by Microsoft last month failed to fully fix a critical flaw in U.S. tech giant's SharePoint server ...

Unknown threat actors are using a weaponised version of an exploit showcased at Pwn2Own Berlin in May to target SharePoint ...

A security patch released by Microsoft earlier this month failed to fully fix a critical flaw in the U.S. tech company's SharePoint server software that had been identified at a hacking competition in ...

Microsoft has observed three China-based threat actors, Linen Typhoon, Violet Typhoon and Storm-2603, exploiting the ...

Microsoft said an attack campaign targeting zero-day vulnerabilities in on-premises SharePoint servers appears to have begun ...

Microsoft also has issued a patch for a related SharePoint vulnerability — CVE-2025-53771; Microsoft says there are no signs ...