CVE-2020-4004

Severity: high (CVSS 8.2 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-11-20 · updated 2026-06-17
Weakness: CWE-416

Description

VMware ESXi (7.0 before ESXi70U1b-17168206, 6.7 before ESXi670-202011101-SG, 6.5 before ESXi650-202011301-SG), Workstation (15.x before 15.5.7), Fusion (11.x before 11.5.7) contain a use-after-free vulnerability in the XHCI USB controller. A malicious actor with local administrative privileges on a virtual machine may exploit this issue to execute code as the virtual machine's VMX process running on the host.

Affected products

VMware Cloud Foundation: from 3.0 before 3.10.1.2; from 4.0 before 4.1.0.1 — fixed in 3.10.1.2, 4.1.0.1
VMware ESXi: 6.5-650-201701001, 6.5-650-201703001, 6.5-650-201703002, 6.5-650-201704001, 6.5-650-201707101, 6.5-650-201707102 (+170); 6.5, 6.7, 7.0
VMware Fusion: from 11.0 before 11.5.7 — fixed in 11.5.7
VMware Workstation: from 15.0.0 before 15.5.7 — fixed in 15.5.7
Fusion: 11.x before 11.5.7
VMware ESXi: 7.0 before ESXi70U1b-17168206, 6.7 before ESXi670-202011101-SG, 6.5 before ESXi650-202011301-SG
Workstation: 15.x before 15.5.7

How to fix

Upgrade to a fixed version: VMware Cloud Foundation 3.10.1.2, 4.1.0.1; VMware Fusion 11.5.7; VMware Workstation 15.5.7. Check the vendor advisory for mitigations.

References

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