CVE-2026-65660

Microsoft SharePoint contains a code injection vulnerability which could allow an authorized attacker to execute code over a network.

Exploited in the wild

Vendor

Microsoft, SharePoint

CISA deadline for US federal agencies

Sep 28, 2026

Required action

Apply mitigations in accordance with vendor instructions, ensuring compliance with CISA’s BOD 26-04 Prioritizing Security Updates Based on Risk (see URL in Notes) guidance and CISA’s “Forensics Triage Requirements” (see URL in Notes). Follow applicable BOD 26-04 guidance for cloud services or discontinue use of the product if mitigations are unavailable.