Is CVE-2020-3967 in the CISA KEV catalog?

No. CVE-2020-3967 is not currently on the CISA Known Exploited Vulnerabilities list.

What is the CVSS severity of CVE-2020-3967?

CVE-2020-3967 has a CVSS v3 base score of 7.5 (HIGH).

What is the EPSS score for CVE-2020-3967?

CVE-2020-3967 has an EPSS score of 0.47% (38th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2020-3967?

Upgrade cloud foundation to 4.0.1 or later. Fixes are available for 3 affected products.

CVE & CISA-KEV Catalog

CVE-2020-3967

HIGH

7.5

CVSS v3

NVD

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.

CWE-787Out-of-bounds Write

How to fix

Remediation Available

cloud foundationNVD

Affected:>= 4.0.0, < 4.0.1Fixed in:4.0.1CVE-2020-3967derived from NVD

fusionNVD

Affected:>= 11.0.0, < 11.5.5Fixed in:11.5.5CVE-2020-3967derived from NVD

workstationNVD

Affected:>= 15.0.0, < 15.5.5Fixed in:15.5.5CVE-2020-3967derived 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 ComplexityHigh

Privileges RequiredHigh

User InteractionNone

ScopeChanged

Impact

ConfidentialityHigh

IntegrityHigh

AvailabilityHigh

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

Exploit Intelligence

0.47%probability of exploitation in 30 days

38thpercentile

Low risk: more likely to be exploited than 38% of all known CVEs.

References

Vendor Advisory1

vmware.com

Third-Party Advisory1

zerodayinitiative.com

Related Vulnerabilities

Other CWE-787 (Out-of-bounds Write) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2025-22457	Critical	9.0	100%	KEV + Ransom	Fix
CVE-2025-0282	Critical	9.0	100%	KEV + Ransom	-
CVE-2015-3113	Critical	9.8	100%	KEV	Fix
CVE-2021-20038	Critical	9.8	100%	KEV + Ransom	-
CVE-2023-4863	High	8.8	100%	KEV	Fix
CVE-2020-16040	Medium	6.5	100%	-	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 2024-11-21.