How severe is CVE-2020-3947?

CVE-2020-3947 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2020-3947 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-3947?

CVE-2020-3947 primarily affects Vmware Fusion. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-3947?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2020-3947 published?

CVE-2020-3947 was published on 2020-03-16 and last updated on 2026-06-17.

CVE-2020-3947

CVE-2020-3947 is a high-severity vulnerability in Vmware Fusion with a CVSS 3.x base score of 8.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-416.

Key facts

Severity: High (CVSS 3.x base score 8.8)
CVSS v2: 7.2
EPSS exploit prediction: 1% (46th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-416
Affected product: Vmware Fusion
Published: 2020-03-16
Last modified: 2026-06-17

Description

VMware Workstation (15.x before 15.5.2) and Fusion (11.x before 11.5.2) contain a use-after vulnerability in vmnetdhcp. Successful exploitation of this issue may lead to code execution on the host from the guest or may allow attackers to create a denial-of-service condition of the vmnetdhcp service running on the host machine.

Frequently asked questions

What is CVE-2020-3947?: VMware Workstation (15.x before 15.5.2) and Fusion (11.x before 11.5.2) contain a use-after vulnerability in vmnetdhcp. Successful exploitation of this issue may lead to code execution on the host from the guest or may allow attackers to create a denial-of-service condition of the vmnetdhcp service running on the host machine.
How severe is CVE-2020-3947?: CVE-2020-3947 has a CVSS 3.x base score of 8.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2020-3947 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (46th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-3947?: CVE-2020-3947 primarily affects Vmware Fusion. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-3947?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2020-3947 published?: CVE-2020-3947 was published on 2020-03-16 and last updated on 2026-06-17.

References

https://www.vmware.com/security/advisories/VMSA-2020-0004.html

Affected products (2)

cpe:2.3:a:vmware:fusion:*:*:*:*:*:*:*:*
cpe:2.3:a:vmware:workstation:*:*:*:*:*:*:*:*

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