CISA gave agencies until the end of the day on Monday to mitigate a severe zero-day vulnerability in Microsoft's widely used SharePoint software.

It issued an alert about “active attacks” targeting its server software and urged customers to install new security updates ...

According to the Cybersecurity and Infrastructure Security Agency (CISA), the hackers use a variation of an existing vulnerability. With ToolShell onboard, SharePoint Servers are capable of executing ...

Attackers are using a remote execution code on vulnerable systems to initiate a zero-day exploit called "ToolShell" that is ...

Microsoft Systems administrators everywhere, it looks like you get a Patch Monday as a side dish to the usual Patch Tuesday ...

Microsoft issued an alert about "active attacks" targeting its SharePoint server software, which is widely used by businesses ...

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

The U.S. Cybersecurity and Infrastructure Security Agency (CISA), in an alert, said it's aware of active exploitation of CVE-2025-53770, which enables unauthenticated access to SharePoint systems and ...

A major cyberattack has hit Microsoft's SharePoint platforms, putting thousands of organizations at risk around the world.

An ongoing cyberattack campaign known as “ToolShell” is exploiting on-premises Microsoft SharePoint Servers and has ...

Microsoft’s widely used collaboration platform, SharePoint, has come under threat from hackers exploiting a dangerous ...

Microsoft is working to fix critical security vulnerabilities affecting on-premises SharePoint Servers that are already being ...