CVE-2007-5671: VMware Ace

Medium severity, CVSS 4.4. EPSS: 0.4% chance of exploitation in the next 30 days.

HGFS.sys in the VMware Tools package in VMware Workstation 5.x before 5.5.6 build 80404, VMware Player before 1.0.6 build 80404, VMware ACE before 1.0.5 build 79846, VMware Server before 1.0.5 build 80187, and VMware ESX 2.5.4 through 3.0.2 does not properly validate arguments in user-mode METHOD_NEITHER IOCTLs to the \\.\hgfs device, which allows guest OS users to modify arbitrary memory locations in guest kernel memory and gain privileges.

Affected products

• VMware Ace: version 1.0.0 only; version 1.0.1 only; version 1.0.2 only; version 1.0.3 only; version 1.0.4 only
• VMware Esx: version 2.5.4 only; version 3.0.0 only; version 3.0.1 only; version 3.0.2 only
• VMware Esx Server: version 2.5.5 only
• VMware Player: version 1.0.4 only
• VMware Server: version 1.0.3 only
• VMware VMware Player: version 1.0.0 only; version 1.0.1 only; version 1.0.2 only; version 1.0.3 only; version 1.0.5 only
• VMware VMware Server: version 1.0.0 only; version 1.0.1 only; version 1.0.2 only; version 1.0.4 only
• VMware VMware Workstation: version 5.5.0 only; version 5.5.2 only; version 5.5.5 only
• VMware Workstation: version 5.5.1 only; version 5.5.3 only; version 5.5.4 only

Published 2008-06-05. Last modified 2026-06-16.