Microsoft SharePoint Code Injection Vulnerability
This vulnerability is in the CISA Known Exploited Vulnerabilities catalog: attackers are using it. If you run SharePoint, fix it now.
CISA 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. Stakeholders are responsible for evaluating each asset's internet exposure and ensuring adherence to BOD 26-04 patching guidelines.
US federal civilian agencies must remediate by Sep 28, 2026.
Official fix available since
Apply the vendor's update to every affected system. Check the fixed-in versions below where known.
Basis: NVD patch reference
Improper control of generation of code ('code injection') in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
Source: NIST National Vulnerability Database. Official vulnerability data, reproduced as published.
| Product | Vendor | Source |
|---|---|---|
| SharePoint | Microsoft | KEV |
Sources: KEV = CISA Known Exploited Vulnerabilities catalog. Version details have not been published yet.
Developments from the last 30 days, newest first.
CVE-2026-65660 scored CVSS 8.8: Microsoft SharePoint, Microsoft SharePoint Code Injection Vulnerability
CISA lists this as exploited in the wild. Unpatched SharePoint systems are exposed to active attacks now.
Basis: NIST National Vulnerability Database
Patch released for CVE-2026-65660: Microsoft SharePoint, Microsoft SharePoint Code Injection Vulnerability
An official fix is now available for Microsoft SharePoint. This vulnerability is being exploited, so apply it promptly.
Basis: NVD patch reference
CVE-2026-65660 added to CISA KEV: Microsoft SharePoint, Microsoft SharePoint Code Injection Vulnerability
CISA lists this as exploited in the wild. Unpatched SharePoint systems are exposed to active attacks now.
Basis: CISA Known Exploited Vulnerabilities catalog
CISA lists this as exploited in the wild. Unpatched SharePoint and RouterOS systems are exposed to active attacks now.
Apply the vendor's security update for SharePoint and RouterOS.
CISA lists this as exploited in the wild. Unpatched SharePoint systems are exposed to active attacks now.
Apply the vendor's security update for SharePoint.
