CVE-2026-85900: Microsoft Office SharePoint 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 Office SharePoint 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 16.0.20326.20190Patch KB5002927
Event History
Frequently Asked Questions
What level of access does an attacker need to exploit this vulnerability?
An attacker must be authorized, meaning they need authenticated access to the affected SharePoint environment. No user interaction is required after they have that access.
Can this be exploited remotely?
Yes. The vulnerability is exploitable over a network with low attack complexity, and successful exploitation can result in remote code execution.
What is the potential impact of successful exploitation?
Successful exploitation can allow code execution and has high impacts on confidentiality, integrity, and availability.