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CVE-2020-3955

VMware ESXi Published: (6 years ago)

Description

ESXi 6.5 without patch ESXi650-201912104-SG and ESXi 6.7 without patch ESXi670-202004103-SG do not properly neutralize script-related HTML when viewing virtual machines attributes. VMware has evaluated the severity of this issue to be in the Important severity range with a maximum CVSSv3 base score of 8.3.

Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.

Affected products and versions

VendorProductVersions
VMware ESXi ESXi 6.5 without patch ESXi650-201912104-SG, ESXi 6.7 without patch ESXi670-202004103-SG

References and patches

Recent CVEs in the same product — VMware ESXi / vCenter

2.7Low
CVE-2026-41709 KEV

ESX insufficient logging vulnerability

VMware Cloud Foundation; VMware vSphere Foundation; VMware ESX; VMware Telco Cloud Platform

VMware ESX contains an insufficient logging vulnerability. A malicious administrator could exploit this issue to perform certain operations without them being logged.

7.6High
CVE-2026-41703

Out-of-bounds read vulnerability

VMware Cloud Foundation; VMware vSphere Foundation; VMware ESX; VMware Workstation

VMware ESX, Workstation, and Fusion contain an out-of-bounds read vulnerability. A malicious actor with VM deployment privileges could trigger an out-of-bounds read, potentially leading to information disclosure or more likely a Denial-of-Service (DoS) condit…

9.3Critical
CVE-2026-47876

VMXNET3 out-of-bounds write vulnerability

VMware Cloud Foundation; VMware vSphere Foundation; VMware ESX; VMware Telco Cloud Platform

VMware ESX contains an out-of-bounds write vulnerability in the VMXNET3 virtual network adapter. A malicious actor with local administrative privileges on a virtual machine with VMXNET3 virtual network adapter may exploit this issue to execute code on the hos…

9.8Critical
CVE-2026-59309

vCenter authentication-bypass vulnerability

VMware Cloud Foundation; VMware vSphere Foundation; VMware vCenter; VMware Telco Cloud Infrastructure

VMware vCenter contains an authentication bypass vulnerability in the VMware Directory Service. A malicious actor with network access to vCenter may exploit this issue to bypass authentication and gain unauthorized access to the system.

9.8Critical
CVE-2026-59310 KEV Used in ransomware

vCenter directory-traversal vulnerability

VMware Cloud Foundation; VMware vSphere Foundation; VMware vCenter; VMware Telco Cloud Infrastructure

VMware vCenter contains a directory traversal vulnerability in the Syslog server. A malicious actor with network access to vCenter may exploit this issue to execute arbitrary code.

62%EPSS
8.0High
CVE-2026-41724

VMSA-2026-0004: VMware Cloud Foundation Operations updates address multiple vulnerabilities (CVE-2026-41722, CVE-2026-41723 and CVE-2026-41724)

VMware VCF operations; VMware VMware Aria Operations; VMware VMware Telco Cloud Platform

VMware Cloud Foundation Operations contains multiple stored cross-site scripting vulnerabilities.A malicious actor with privileges to create policies, views or text-widgets may be able to inject scripts to perform administrative actions in VMware Cloud Founda…