CVE-2020-3963: VMware Cloud Foundation

Medium severity, CVSS 5.5. EPSS: 0.6% chance of exploitation in the next 30 days.

VMware ESXi (7.0 before ESXi_7.0.0-1.20.16321839, 6.7 before ESXi670-202006401-SG and 6.5 before ESXi650-202005401-SG), Workstation (15.x before 15.5.2), and Fusion (11.x before 11.5.2) contain a use-after-free vulnerability in PVNVRAM. A malicious actor with local access to a virtual machine may be able to read privileged information contained in physical memory.

Affected products

• VMware Cloud Foundation: from 3.0, before 3.10 (fixed in 3.10); from 4.0.0, before 4.0.1 (fixed in 4.0.1)
• VMware ESXi: version 6.5 only; version 6.7 only; version 7.0.0 only
• VMware Fusion: from 11.0.0, before 11.5.2 (fixed in 11.5.2)
• VMware Workstation: from 15.0.0, before 15.5.2 (fixed in 15.5.2)

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