Critical

Microsoft SharePoint Flaw CVE-2026-65660 Now Exploited in Attacks

SecurityWeek

September 27, 2026 at 9:23 AM

Actively Exploited

Overview

The Cybersecurity and Infrastructure Security Agency (CISA) has added a vulnerability in Microsoft SharePoint, identified as CVE-2026-65660, to its Known Exploited Vulnerabilities (KEV) catalog. This flaw is currently being exploited in the wild, prompting CISA to issue a patching deadline for federal agencies by September 28. Organizations using SharePoint should prioritize applying the necessary updates to mitigate potential risks. The urgency of this situation lies in the fact that attackers can leverage this vulnerability for unauthorized access, which could lead to data breaches and other security incidents. It's crucial for users to stay informed and act quickly to secure their systems.

Key Takeaways

Active Exploitation: This vulnerability is being actively exploited by attackers. Immediate action is recommended.
Affected Systems: Microsoft SharePoint
Action Required: CISA has set a patching deadline for September 28 for federal agencies to address this vulnerability.
Timeline: Newly disclosed

Original Article Summary

CISA added CVE-2026-65660 to its KEV catalog, giving federal agencies a patching deadline of September 28. The post Microsoft SharePoint Flaw CVE-2026-65660 Now Exploited in Attacks appeared first on SecurityWeek.

Impact

Microsoft SharePoint

Exploitation Status

This vulnerability is confirmed to be actively exploited by attackers in real-world attacks. Organizations should prioritize patching or implementing workarounds immediately.

Timeline

Newly disclosed

Remediation

CISA has set a patching deadline for September 28 for federal agencies to address this vulnerability. Users should ensure they apply the latest security updates provided by Microsoft for SharePoint.

Additional Information

This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.

Related Topics: This incident relates to CVE, Microsoft, Vulnerability.

Read Original Article

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