CrowdStrike Detects and Blocks Widespread SharePoint Zero-Day Exploitation
Beginning on July 18, 2025, at approximately 0700 UTC, CrowdStrike Falcon Complete Next-Gen MDR and CrowdStrike Falcon Adversary OverWatch identified a wave of Microsoft SharePoint exploitation attempts by an unknown adversary. Two distinct zero-day vulnerabilities were made publicly available: a critical remote code execution vulnerability (CVE-2025-53770) and a server spoofing vulnerability (CVE-2025-53771).