CVE-2020-3971: VMware Cloud Foundation

Medium severity, CVSS 5.5. EPSS: 0.3% chance of exploitation in the next 30 days.

VMware ESXi (6.7 before ESXi670-201904101-SG and 6.5 before ESXi650-201907101-SG), Workstation (15.x before 15.0.2), and Fusion (11.x before 11.0.2) contain a heap overflow vulnerability in the vmxnet3 virtual network adapter. A malicious actor with local access to a virtual machine with a vmxnet3 network adapter present may be able to read privileged information contained in physical memory.

Affected products

• VMware Cloud Foundation: from 3.0, before 3.7.2 (fixed in 3.7.2)
• VMware ESXi: version 6.5 only; version 6.7 only
• VMware Fusion: from 11.0.0, before 11.0.2 (fixed in 11.0.2)
• VMware Workstation: from 15.0.0, before 15.0.2 (fixed in 15.0.2)

Published 2020-06-25. Last modified 2026-06-17.