SharePoint RCE CVE-2026-45659 Added to CISA KEV After Active Exploitation

A high-severity remote code execution (RCE) vulnerability (CVE-2026-45659) in Microsoft SharePoint Server has been added to the CISA KEV catalog due to active exploitation. This vulnerability, stemming from deserializing untrusted data, allows authenticated attackers to execute code without elevated privileges. Micros…