CVE-2026-88164: Microsoft Office SharePoint Elevation of Privilege Vulnerability
Microsoft Office SharePoint Elevation of Privilege Vulnerability
Other sources
Missing authorization in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.
— 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
Who is exposed to this vulnerability?
Deployments of Microsoft SharePoint Server Subscription Edition are affected. Exploitation is possible over the network.
What does an attacker need to exploit it?
The attacker must already be authorized, meaning they need an account or other authenticated access to the affected SharePoint environment. No user interaction is required.
What is the potential impact of successful exploitation?
A successful attacker can elevate privileges. The supplied severity metrics indicate potential high impact to confidentiality, integrity, and availability.