Zero Day Watch CVE-2025-53770 Turns SharePoint into a Pivot Point

A high-impact zero-day vulnerability, tracked as CVE-2025-53770, is actively being exploited in the wild, targeting on-premises Microsoft SharePoint Servers. This newly uncovered flaw enables attackers to sidestep existing security patches and gain unauthorized access to critical systems. Organizations with internet-facing SharePoint environments are strongly urged to assume compromise and move swiftly with proactive containment and comprehensive remediation.