Cloud Foundation
CVE-2020-3971
MEDIUM
Severity by source
AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
Lifecycle Timeline
1DescriptionNVD
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.
AnalysisAI
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. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity. No vendor patch available.
Technical ContextAI
This vulnerability is classified as Out-of-bounds Write (CWE-787), which allows attackers to write data beyond allocated buffer boundaries leading to code execution or crashes. 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. Affected products include: Vmware Cloud Foundation, Vmware Fusion, Vmware Workstation, Vmware Esxi. Version information: before 15.0.2.
RemediationAI
No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Validate write boundaries, use memory-safe languages, enable compiler protections (ASLR, stack canaries).
More in Cloud Foundation
View allThe vSphere Client (HTML5) contains a remote code execution vulnerability due to lack of input validation in the Virtual
The vSphere Client (HTML5) contains a remote code execution vulnerability in a vCenter Server plugin. Rated critical sev
OpenSLP as used in VMware ESXi (7.0 before ESXi_7.0.1-0.0.16850804, 6.7 before ESXi670-202010401-SG, 6.5 before ESXi650-
Server Side Request Forgery in vRealize Operations Manager API (CVE-2021-21975) prior to 8.4 may allow a malicious actor
VMware ESXi and Workstation contain a TOCTOU race condition leading to out-of-bounds write, allowing local administrator
Arbitrary file write vulnerability in vRealize Operations Manager API (CVE-2021-21983) prior to 8.4 may allow an authent
Remote code execution in VMware vCenter Server (and bundled distributions including Cloud Foundation, vSphere Foundation
VMware ESXi contains an arbitrary write vulnerability that allows privileged VMX process users to trigger kernel writes,
VMware Aria Operations contains a command injection vulnerability (CVE-2026-22719, CVSS 8.1) that allows unauthenticated
VMware ESXi, Workstation, and Fusion contain an information disclosure vulnerability via HGFS out-of-bounds read, allowi
VMware Workspace ONE Access and Identity Manager contain a remote code execution vulnerability due to server-side templa
The vCenter Server contains an arbitrary file upload vulnerability in the Analytics service. Rated critical severity (CV
Same weakness CWE-787 – Out-of-bounds Write
View allSame technique Buffer Overflow
View allShare
External POC / Exploit Code
Leaving vuln.today