37K+ VMware ESXi Instances at Risk: Critical Zero-Day Vulnerabilities Disclosed – Urgent Patch Required!
Broadcom disclosed three critical zero-day vulnerabilities in VMware ESXi, Workstation, and Fusion in March 2025, which are being actively exploited and could grant attackers significant control over affected systems. These flaws, including a TOCTOU vulnerability and privilege escalation risks, impact tens of thousands of unpatched ESXi instances globally, necessitating immediate patching. Challenges in obtaining patches through Broadcom's portal exist for some users, emphasizing the need for alternative methods and proactive security measures. Organizations are urged to apply patches, restrict administrative access, and monitor for suspicious activity, with companies like Technijian offering assistance in securing VMware environments against these threats. The vulnerabilities underscore the importance of vigilance and timely updates to mitigate serious security risks.
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