CVE-2025-62624: Buffer Overflow in VMware ESXi

The heap-based buffer overflow presents a significant risk to ESXi environments. An attacker who successfully exploits this vulnerability could gain elevated privileges, effectively bypassing standard access controls. This could lead to complete system compromise, allowing the attacker to install malware, steal sensitive data, or disrupt critical operations. The potential for arbitrary code execution means the attacker could run any code they choose on the ESXi host, potentially impacting all virtual machines running on that host. This vulnerability shares characteristics with other buffer overflow exploits, highlighting the importance of immediate mitigation.

1. Veröffentlicht2026-05-13

Due to the lack of a specific fixed version, immediate mitigation strategies are crucial. Administrators should review VMware's security advisories for updates. As a temporary workaround, consider segmenting the network to limit access to the ESXi host. Implement strict firewall rules to restrict traffic to the ionic cloud driver interface. Monitor system logs for any unusual activity or signs of exploitation. After a patch is released by VMware, apply it promptly and verify the fix by confirming the ionic cloud driver no longer exhibits the overflow behavior using debugging tools or vulnerability scanners.