Chinese nation-state groups exploiting SharePoint vulnerability, Microsoft confirms
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
4 min read at therecord.media
At least two Chinese nation-state threat groups are targeting internet-facing SharePoint servers via several recently disclosed vulnerabilities, Microsoft warned customers on Tuesday. In addition to the two confirmed nation-state groups — identified as Linen Typhoon and Violet Typhoon — Microsoft said it found another China-based group attacking SharePoint servers.
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