CVE-2020-4005: VMware Cloud Foundation

High severity, CVSS 7.8. EPSS: 0.4% chance of exploitation in the next 30 days.

VMware ESXi (7.0 before ESXi70U1b-17168206, 6.7 before ESXi670-202011101-SG, 6.5 before ESXi650-202011301-SG) contains a privilege-escalation vulnerability that exists in the way certain system calls are being managed. A malicious actor with privileges within the VMX process only, may escalate their privileges on the affected system. Successful exploitation of this issue is only possible when chained with another vulnerability (e.g. CVE-2020-4004)

Affected products

• VMware Cloud Foundation: from 3.0, before 3.10.1.2 (fixed in 3.10.1.2); from 4.0, before 4.1.0.1 (fixed in 4.1.0.1)
• VMware ESXi: version 6.5 only; version 6.7 only; version 7.0 only

Published 2020-11-20. Last modified 2026-06-17.