Recent attacks linked to Chinese hacking groups have exploited a zero-day vulnerability in Microsoft SharePoint, breaching numerous organizations globally. The vulnerabilities, identified as CVE-2025-49706 and CVE-2025-49704, were actively targeted by multiple threat actors, prompting Microsoft and CISA to release emergency patches and recommend immediate action for affected entities.

Russian hackers have been exploiting vulnerabilities in Microsoft's OAuth 2.0 authentication framework, allowing them to access sensitive information from targeted accounts. This ongoing attack poses significant security risks for organizations using Microsoft services, emphasizing the need for enhanced security measures and awareness.