Microsoft Office SharePoint Spoofing Vulnerability
Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely CVE-2026-109456 · score 4.6/10
What could go wrong?
An attacker could pretend to be someone or something you trust.
How urgent is it?
Check Microsoft’s page for details.
Who is affected?
Microsoft SharePoint Server Subscription Edition
What should I do?
Install this month’s updates via Windows Update, Intune or your update tool, then restart.
Known problems
Microsoft lists known issues per update: KB5002945. Official page.