Is CVE-2020-4004 in the CISA KEV catalog?

No. CVE-2020-4004 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-4004?

CVE-2020-4004 has a CVSS v3 base score of 8.2 (HIGH).

What is the EPSS score for CVE-2020-4004?

CVE-2020-4004 has an EPSS score of 0.39% (31th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-4004?

Upgrade cloud foundation to 4.1.0.1 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2020-4004

HIGH

8.2

CVSS v3

NVD

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.

CWE-416Use After Free

How to fix

Remediation Available

cloud foundationNVD

Affected:>= 4.0, < 4.1.0.1Fixed in:4.1.0.1CVE-2020-4004derived from NVD

fusionNVD

Affected:>= 11.0, < 11.5.7Fixed in:11.5.7CVE-2020-4004derived from NVD

workstationNVD

Affected:>= 15.0.0, < 15.5.7Fixed in:15.5.7CVE-2020-4004derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorLocal

Attack ComplexityLow

Privileges RequiredHigh

User InteractionNone

ScopeChanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.39%probability of exploitation in 30 days

31stpercentile

Low risk: more likely to be exploited than 31% of all known CVEs.

References

Patch1

vmware.com

Related Vulnerabilities

Other CWE-416 (Use After Free) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2019-0708	Critical	9.8	100%	KEV + Ransom	-
CVE-2021-31166	Critical	9.8	100%	KEV	Fix
CVE-2015-5119	Critical	9.8	99%	KEV	-
CVE-2010-3962	High	8.1	97%	KEV	-
CVE-2015-0313	Critical	9.8	96%	KEV	Fix
CVE-2017-9798	High	7.5	95%	-	Fix

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2025-10-31.