CVE-2026-88155: Microsoft Office SharePoint Remote Code Execution Vulnerability
Heap-based buffer overflow 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
Who can exploit this vulnerability?
An attacker must be authorized to access the affected SharePoint Server Subscription Edition environment. Exploitation can be performed over the network and does not require user interaction.
What level of impact could successful exploitation have?
Successful exploitation allows the authorized attacker to execute code. The published severity vector indicates high impacts to confidentiality, integrity, and availability.
Which deployments are identified as affected?
The provided data identifies Microsoft SharePoint Server Subscription Edition. It does not provide affected build numbers, patch levels, or configuration-specific exposure details.