Microsoft pins on-prem SharePoint attacks on Chinese threat actors
Vulnerabilities mentioned
All| CVE | Vulnerability | CVSS | EPSS | Signals | Published |
|---|---|---|---|---|---|
CVE-2025-49704+1 related CVE | Authenticated Code Injection RCE in Microsoft SharePoint | 8.8 group max | 100% | KEVRansomware | KEV |
| CVE-2025-53770 | Unauthenticated Deserialization RCE in Microsoft SharePoint Server on-premises | 9.8 | 100% | KEVRansomwarePoC ×3 | KEV |
| CVE-2025-53771 | Improper Authentication in Microsoft SharePoint Server Enables Network Spoofing | 6.5 | 100% |
From the original article
3 min read at helpnetsecurity.com
Storm-2603 spotted deploying ransomware on exploited SharePoint servers As Microsoft continues to update its customer guidance for protecting on-prem SharePoint servers against the latest in-the-wild attacks , more security firms have begun sharing details about the ones they have detected.
By @zeljkazorz · helpnetsecurity.com
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