CVE-2026-64901: 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 - Upgrade
Upgrade to a fixed release to a version that resolves this vulnerability.
Fixed in 16.0.5565.1001Patch KB5002906
Event History
Frequently Asked Questions
What is the severity of CVE-2026-64901?
CVE-2026-64901 has a high severity rating of 8.8.
How do I fix CVE-2026-64901?
To fix CVE-2026-64901, apply the latest security updates and patches provided by Microsoft for affected SharePoint Server versions.
What types of software are affected by CVE-2026-64901?
CVE-2026-64901 affects Microsoft SharePoint Server Subscription Edition, Microsoft SharePoint Server 2019, and Microsoft SharePoint Enterprise Server 2016.
What impact does CVE-2026-64901 have on systems?
CVE-2026-64901 allows an authorized attacker to execute remote code on the vulnerable SharePoint server.
When was CVE-2026-64901 published?
CVE-2026-64901 was published on August 11, 2026.