September 25, 2026 · Applied Cybernetics Group
CVE-2026-65660 — Microsoft SharePoint
Microsoft SharePoint Code Injection Vulnerability
- Added to KEV
2026-09-25- Federal due date
2026-09-28- Vendor
- Microsoft
- Product
- SharePoint
- EPSS
- 81.1th percentile (score 0.021, as of
2026-10-04) - NVD CVSS v3.1
- 8.8 (HIGH)
- Ransomware use
- Unknown
- Upstream
- https://nvd.nist.gov/vuln/detail/CVE-2026-65660
CISA short description
Microsoft SharePoint contains a code injection vulnerability which could allow an authorized attacker to execute code over a network.
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.
NVD description
Improper control of generation of code ('code injection') in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.