Microsoft Warns of Active Exploitation of Critical SharePoint Zero-Day Vulnerability
TL;DR Summary
CISA warns of active exploitation of a new SharePoint remote code execution vulnerability (CVE-2025-53770), which allows unauthorized access and full control over SharePoint content. Organizations are advised to implement recommended security measures such as enabling AMSI, deploying Microsoft Defender, monitoring for suspicious activity, and applying official patches to mitigate risks. The vulnerability has been added to CISA’s KEV catalog, and incident reporting is encouraged.
Topics:technology#cisa-guidance#cve-2025-53770#cybersecurity#exploitation#security#sharepoint-vulnerability
- Microsoft Releases Guidance on Exploitation of SharePoint Vulnerability (CVE-2025-53770) CISA (.gov)
- Critical Unpatched SharePoint Zero-Day Actively Exploited, Breaches 75+ Company Servers The Hacker News
- SharePoint Under Attack: Microsoft Warns of Zero-Day Exploited in the Wild – No Patch Available SecurityWeek
- Microsoft SharePoint zero-day exploited in RCE attacks, no patch available BleepingComputer
- SharePoint 0-Day RCE Vulnerability Actively Exploited in the Wild to Gain Full Server Access CyberSecurityNews
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