CVE-2026-65660: Microsoft SharePoint Server Spoofing Vulnerability
Improper control of generation of code ('code injection') in Microsoft Office SharePoint allows an authorized attacker to perform spoofing over a network.
Other sources
Microsoft SharePoint Server Spoofing Vulnerability
— Microsoft
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.10417.20198Patch KB5002896 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.5565.1001Patch KB5002906 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.19725.20522Patch KB5002893
Event History
Frequently Asked Questions
What is the severity of CVE-2026-65660?
CVE-2026-65660 has a medium severity rating of 6.5.
How do I fix CVE-2026-65660?
To mitigate CVE-2026-65660, apply the latest security updates provided by Microsoft for your SharePoint Server version.
What type of vulnerability is CVE-2026-65660?
CVE-2026-65660 is classified as a spoofing vulnerability due to improper code generation controls.
Which software is affected by CVE-2026-65660?
CVE-2026-65660 affects Microsoft SharePoint Server, including its 2019, 2016, and Subscription Edition versions.
What could an attacker do with CVE-2026-65660?
An attacker exploiting CVE-2026-65660 could perform spoofing attacks over a network due to code injection vulnerabilities.