CVE-2026-64916: Microsoft SharePoint Server Spoofing Vulnerability
Improper neutralization of input during web page generation ('cross-site scripting') 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 16.0.5565.1001Patch KB5002906 - 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 16.0.19725.20522Patch KB5002893
Event History
Frequently Asked Questions
What is the severity of CVE-2026-64916?
CVE-2026-64916 has a medium severity rating of 4.6.
How do I fix CVE-2026-64916?
To fix CVE-2026-64916, apply the latest security updates provided by Microsoft for SharePoint Server.
What types of systems are affected by CVE-2026-64916?
CVE-2026-64916 affects Microsoft SharePoint Enterprise Server 2016, Microsoft SharePoint Server 2019, and Microsoft SharePoint Server Subscription Edition.
What is the risk associated with CVE-2026-64916?
CVE-2026-64916 poses a risk of spoofing attacks due to improper input neutralization leading to cross-site scripting vulnerabilities.
Who can exploit CVE-2026-64916?
An authorized attacker can exploit CVE-2026-64916 to perform spoofing over a network.