CVE-2020-3964

Severity: medium (CVSS 4.7 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.5% probability of exploitation in the next 30 days
Public exploit or detection template: yes
Published: 2020-06-25 · updated 2026-06-17
Weakness: CWE-908

Description

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 an information leak in the EHCI USB controller. A malicious actor with local access to a virtual machine may be able to read privileged information contained in the hypervisor's memory. Additional conditions beyond the attacker's control need to be present for exploitation to be possible.

Affected products

VMware Cloud Foundation: from 3.0 before 3.10; from 4.0.0 before 4.0.1 — fixed in 3.10, 4.0.1
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 (+177); 6.5, 6.7, 7.0.0
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
VMware ESXi: 7.0 before ESXi_7.0.0-1.20.16321839, 6.7 before ESXi670-202006401-SG, 6.5 before ESXi650-202005401-SG
VMware Fusion: 11.x before 11.5.2
VMware Workstation: 15.x before 15.5.2

How to fix

Upgrade to a fixed version: VMware Cloud Foundation 3.10, 4.0.1; VMware Fusion 11.5.2; VMware Workstation 15.5.2. Check the vendor advisory for mitigations.

References

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