Vulnerability Monitor

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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.

Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 5.5, requiring local system access to exploit with relatively low complexity without requiring user interaction requiring only low-level privileges . The vulnerability impacts confidentiality (data exposure), for affected systems. Impacting 4 products from vmware, from vmware, from vmware and 1 other, organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2020, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.

Published

2020-06-25T15:15:11.507

Last Modified

2024-11-21T05:32:05.303

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 5.5 (MEDIUM)

CVSSv2 Vector

AV:L/AC:L/Au:N/C:P/I:N/A:N

  • Access Vector: LOCAL
  • Access Complexity: LOW
  • Authentication: NONE
  • Confidentiality Impact: PARTIAL
  • Integrity Impact: NONE
  • Availability Impact: NONE
Exploitability Score

3.9

Impact Score

2.9

Weaknesses
  • Type: Primary
    CWE-787
Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Application vmware cloud_foundation < 3.7.2 Yes
Application vmware fusion < 11.0.2 Yes
Application vmware workstation < 15.0.2 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.5 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
Operating System vmware esxi 6.7 Yes
References

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For vmware's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.