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Microsoft Releases Emergency Updates Amid Active Exploitation of SharePoint Zero-Day Vulnerability Chain
Microsoft has released security patches for the zero-day vulnerability chain dubbed ToolShell, capable of remote code execution on SharePoint, resulting in the exploitation of at least 54 organizations worldwide.
Microsoft fixes SharePoint zero-day exploits used in cyberattacks and ransomware - how to patch them
Microsoft has pointed the finger at three Chinese nation-state actors for exploiting the SharePoint vulnerabilities. Here's what we know about the security flaws and how to guard against future attacks.
Microsoft SharePoint zero-day exploited in RCE attacks, no patch available
Critical zero-day vulnerabilities in Microsoft SharePoint, tracked as CVE-2025-53770 and CVE-2025-53771, have been actively exploited since at least July 18th, with no patch available and at least 85 servers already compromised worldwide.
The U.S. Cybersecurity and Infrastructure Security Agency (CISA), in an alert, said it's aware of active exploitation of ...
CISA has mandated immediate mitigation for federal agencies, while analysts urge enterprises to accelerate cloud migration ...
The vulnerability, tracked as CVE-2025-53770, carries a severity rating of 9.8 out of a possible 10. It gives unauthenticated ...
Microsoft also has issued a patch for a related SharePoint vulnerability — CVE-2025-53771; Microsoft says there are no signs ...
A major security vulnerability in Microsoft's widely used Sharepoint server software has been exploited by hackers, causing ...
Active SharePoint exploits since July 7 target governments and tech firms globally, risking key theft and persistent access.
Security researchers say Microsoft customers should take immediate action to defend against the ongoing cyberattacks, and ...
CISA gave agencies until the end of the day on Monday to mitigate a severe zero-day vulnerability in Microsoft's widely used ...
A major cyberespionage operation targeting Microsoft's SharePoint server software has compromised about 100 organizations ...
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