Deserialization of untrusted data in Microsoft Office SharePoint allows an authorized attacker to execute code over a network.
How could an attacker exploit the vulnerability? In a network-based attack, an authenticated attacker, as at least a Site Owner, could write arbitrary code to inject and execute code remotely on the SharePoint Server. There are multiple update packages available for some of the affected software. Do I need to install all the updates listed in the Security Updates table for the software? Yes. Customers should apply all updates offered for the software installed on their systems. If multiple updates apply, they can be installed in any order.
<a href="https://www.linkedin.com/in/john-nzyuko-412b563b1/">John Nzyuko</a>, <a href="https://twitter.com/tuo4n8">tuo4n8</a> with <a href="https://vsrc.vng.com.vn/">Verichains Cyber Force</a>