Microsoft fixes 2 SharePoint zero-days under attack
Digest more
More details emerged on the ToolShell zero-day attacks targeting SharePoint servers, but confusion remains over the vulnerabilities.
Microsoft said an attack campaign targeting zero-day vulnerabilities in on-premises SharePoint servers appears to have begun by July 7, tied to three Chinese hack
Microsoft has observed three China-based threat actors, Linen Typhoon, Violet Typhoon and Storm-2603, exploiting the SharePoint vulnerabilities
Microsoft is following up and is also releasing a patch for the 2016 edition of Sharepoint. Admins should install this immediately.
At least 85 servers worldwide have been compromised through a Microsoft service vulnerability that has been used to achieve remote code execution.
The zero-day flaw, tracked as CVE-2025-53770 (CVSS score: 9.8), has been described as a variant of CVE-2025-49706 (CVSS score: 6.3), a spoofing bug in Microsoft SharePoint Server that was addressed by the tech giant as part of its July 2025 Patch Tuesday updates.