CVE-2020-3967

Name: CVE-2020-3967
Creator: NVD / NIST
Published: 2020-06-25T15:15:11.32+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 7.5/10EPSS 0.47%

Last modified Jun 17, 2026

CVE-2020-3967 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. VMware ESXi (7.0 before ESXi_7.0.0-1.20.16321839, 6.7 before ESXi670-202004101-SG and 6.5 before ESXi650-202005401-SG), Workstation (15.x before 15.5.5), and Fusion (11.x before 11.5.5) contain a heap-overflow vulnerability in the USB 2.0 controller (EHCI). A malicious actor with local access to a virtual machine may be able to exploit this vulnerability to execute code on the hypervisor from a virtual machine. EPSS estimates a 0.47% chance of exploitation in the next 30 days.

Description

VMware ESXi (7.0 before ESXi_7.0.0-1.20.16321839, 6.7 before ESXi670-202004101-SG and 6.5 before ESXi650-202005401-SG), Workstation (15.x before 15.5.5), and Fusion (11.x before 11.5.5) contain a heap-overflow vulnerability in the USB 2.0 controller (EHCI). A malicious actor with local access to a virtual machine may be able to exploit this vulnerability to execute code on the hypervisor from a virtual machine. Additional conditions beyond the attacker's control must be present for exploitation to be possible.

Metrics

CVSS 3.1

7.5/10

CVSS:3.1/AV:L/AC:H/PR:H/UI:N/S:C/C:H/I:H/A:H

EPSS Probability

0.47%

37.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-787

Affected Software

Vendor	Product	Versions
Vmware	Cloud Foundation	>= 3.0, < 3.10
Vmware	Cloud Foundation	>= 4.0.0, < 4.0.1
Vmware	Fusion	>= 11.0.0, < 11.5.5
Vmware	Workstation	>= 15.0.0, < 15.5.5
Vmware	Esxi	6.5
Vmware	Esxi	6.7
Vmware	Esxi	7.0.0

References

https://www.vmware.com/security/advisories/VMSA-2020-0015.htmlVendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-20-784/Third Party Advisory
https://www.vmware.com/security/advisories/VMSA-2020-0015.htmlVendor Advisory
https://www.zerodayinitiative.com/advisories/ZDI-20-784/Third Party Advisory

Timeline

Published: Jun 25, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-3967?

How severe is CVE-2020-3967?

CVE-2020-3967 has a CVSS score of 7.5/10 (HIGH severity). The EPSS model estimates a 0.47% probability of exploitation in the next 30 days.

How do I fix CVE-2020-3967?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-3967?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST