What is CVE-2026-65660?

CVE-2026-65660 is a medium-severity vulnerability in Microsoft Sharepoint Enterprise Server 2016, classified under Code Injection. CVSS score: 6.5/10. Published 2026-08-11.

How severe is CVE-2026-65660?

Medium severity. CVSS v3 base score is 6.5 out of 10.

RCE in Microsoft Sharepoint Enterprise Server 2016

CVE-2026-65660

Improper control of generation of code ('code injection') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.

Vulnerability class: RCE (Remote Code Execution)

CVSS v3 metric

CVSS v3 base score 6.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N.

Affected products

Microsoft Sharepoint Enterprise Server 2016 — versions 16.0.0
Microsoft Sharepoint Server 2019 — versions 16.0.0
Microsoft Sharepoint Server Subscription Edition — versions 16.0.0

Weakness classification (CWE)

CWE-94 — Code Injection

References

Microsoft SharePoint Server Spoofing Vulnerability (vendor-advisory, patch)

Frequently asked questions

What is CVE-2026-65660?: CVE-2026-65660 is a medium-severity vulnerability in Microsoft Sharepoint Enterprise Server 2016, classified under Code Injection. CVSS score: 6.5/10. Published 2026-08-11.
How severe is CVE-2026-65660?: Medium severity. CVSS v3 base score is 6.5 out of 10.