CVE-2023-29357Microsoft SharePoint Server Elevation of Privilege Vulnerability

In plain English

A critical-severity security flaw in Microsoft SharePoint Server 2019 from Microsoft. Attackers are actively exploiting it in the wild (listed by CISA on January 10, 2024). It has been used in ransomware campaigns. The chance it is exploited in the next 30 days is estimated at 100.0% (higher than 99.9% of all known vulnerabilities). Ready-made attack tooling exists: Metasploit, Nuclei, public proof-of-concept code. Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.