CVE-2026-65665: Microsoft SharePoint Server Remote Code Execution Vulnerability
Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
Other sources
Microsoft SharePoint Server Remote Code Execution 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 16.0.19725.20522Patch KB5002893 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.10417.20198Patch KB5002896
Event History
Frequently Asked Questions
What is the severity of CVE-2026-65665?
CVE-2026-65665 has a high severity rating of 8.8.
How do I fix CVE-2026-65665?
To fix CVE-2026-65665, ensure that you apply the latest security updates provided by Microsoft.
What systems are affected by CVE-2026-65665?
CVE-2026-65665 affects Microsoft SharePoint Server, Microsoft SharePoint Server Subscription Edition, and Microsoft SharePoint Server 2019.
What type of vulnerability is CVE-2026-65665?
CVE-2026-65665 is a remote code execution vulnerability caused by the deserialization of untrusted data.
Who can exploit CVE-2026-65665?
An authorized attacker with network access can exploit CVE-2026-65665 to execute code remotely.