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CVE-2020-3971

MEDIUMCVSS 5.5/10EPSS 0.33%

Last modified

CVE-2020-3971 is a medium-severity vulnerability rated 5.5/10 on the CVSS scale. VMware ESXi (6.7 before ESXi670-201904101-SG and 6.5 before ESXi650-201907101-SG), Workstation (15.x before 15.0.2), and Fusion (11.x before 11.0.2) contain a heap overflow vulnerability in the vmxnet3 virtual network adapter. A malicious actor with local access to a virtual machine with a vmxnet3 network adapter present may be able to read privileged information contained in physical memory.. EPSS estimates a 0.33% chance of exploitation in the next 30 days.

Description

VMware ESXi (6.7 before ESXi670-201904101-SG and 6.5 before ESXi650-201907101-SG), Workstation (15.x before 15.0.2), and Fusion (11.x before 11.0.2) contain a heap overflow vulnerability in the vmxnet3 virtual network adapter. A malicious actor with local access to a virtual machine with a vmxnet3 network adapter present may be able to read privileged information contained in physical memory.

Metrics

CVSS 3.1
5.5/10

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

EPSS Probability
0.33%

25.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

VendorProductVersions
VmwareCloud Foundation>= 3.0, < 3.7.2
VmwareFusion>= 11.0.0, < 11.0.2
VmwareWorkstation>= 15.0.0, < 15.0.2
VmwareEsxi6.5
VmwareEsxi6.7

References

Timeline

Published
Last Modified
Status
Modified

Frequently Asked Questions

What is CVE-2020-3971?
VMware ESXi (6.7 before ESXi670-201904101-SG and 6.5 before ESXi650-201907101-SG), Workstation (15.x before 15.0.2), and Fusion (11.x before 11.0.2) contain a heap overflow vulnerability in the vmxnet3 virtual network adapter. A malicious actor with local access to a virtual machine with a vmxnet3 network adapter present may be able to read privileged information contained in physical memory.
How severe is CVE-2020-3971?
CVE-2020-3971 has a CVSS score of 5.5/10 (MEDIUM severity). The EPSS model estimates a 0.33% probability of exploitation in the next 30 days.
How do I fix CVE-2020-3971?
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-2020-3971?

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

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Source: NVD / NIST