SharePoint vulnerability with 9.8 severity rating under exploit across globe
Authorities and researchers are sounding the alarm over the active mass exploitation of a high-severity vulnerability in Microsoft SharePoint Server that’s allowing attackers to make off with sensitive company data, including authentication tokens used to access systems inside networks. Researchers said anyone running an on-premises instance of SharePoint should assume their networks are breached. The vulnerability, tracked as CVE-2025-53770, carries a severity rating of 9.8 out of a possible 1