Showing 25 vulnerabilities on this page for ESXi

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VMware vulnerability results
VulnerabilityTitle and contextCVSSEPSSPoCsSignalsSTIX action

vSockets information-disclosure vulnerability

VMware ESXi, Workstation, Fusion, and VMware Tools contains an information disclosure vulnerability due to the usage of an uninitialised memory in vSockets. A malicious actor with local administrative privileges on a virtual machine may be able to exploit this issue to leak memory from processes communicating with vSockets.

CWE-908Jul 15, 2025
CVSS7.1v3.1EPSS2.15%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

PVSCSI heap-overflow vulnerability

VMware ESXi, Workstation, and Fusion contain a heap-overflow vulnerability in the PVSCSI (Paravirtualized SCSI) controller that leads to an out of-bounds write. A malicious actor with local administrative privileges on a virtual machine may exploit this issue to execute code as the virtual machine's VMX process running on the host. On ESXi, the exploitation is contained within the VMX sandbox and exploitable only with configurations that are unsupported. On Workstation and Fusion, this may lead

CWE-787Jul 15, 2025
CVSS9.3v3.1EPSS0.39%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

VMCI integer-underflow vulnerability

VMware ESXi, Workstation, and Fusion contain an integer-underflow in VMCI (Virtual Machine Communication Interface) that leads to an out-of-bounds write. A malicious actor with local administrative privileges on a virtual machine may exploit this issue to execute code as the virtual machine's VMX process running on the host. On ESXi, the exploitation is contained within the VMX sandbox whereas, on Workstation and Fusion, this may lead to code execution on the machine where Workstation or Fusion

CWE-787Jul 15, 2025
CVSS9.3v3.1EPSS0.39%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

VMXNET3 integer-overflow vulnerability

VMware ESXi, Workstation, and Fusion contain an integer-overflow 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 host. Non VMXNET3 virtual adapters are not affected by this issue.

CWE-787Jul 15, 2025
CVSS9.3v3.1EPSS2.16%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

VMware ESXi and vCenter Server Reflected Cross Site Scripting (XSS) Vulnerability

VMware ESXi and vCenter Server contain a reflected cross-site scripting vulnerability due to improper input validation. A malicious actor with network access to the login page of certain ESXi host or vCenter Server URL paths may exploit this issue to steal cookies or redirect to malicious websites.

CWE-79May 20, 2025
CVSS4.3v3.1EPSS0.857%PoCs1SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

Denial-of-Service Vulnerability

VMware ESXi, Workstation, and Fusion contain a denial-of-service vulnerability due to certain guest options. A malicious actor with non-administrative privileges within a guest operating system may be able to exploit this issue by exhausting memory of the host process leading to a denial-of-service condition.

CWE-400May 20, 2025
CVSS5.5v3.1EPSS0.155%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

Guest Operations Denial-of-Service Vulnerability

VMware ESXi contains a denial-of-service vulnerability that occurs when performing a guest operation. A malicious actor with guest operation privileges on a VM, who is already authenticated through vCenter Server or ESXi may trigger this issue to create a denial-of-service condition of guest VMs with VMware Tools running and guest operations enabled.

CWE-400May 20, 2025
CVSS6.8v3.1EPSS0.259%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

VMware ESXi Arbitrary Write Vulnerability

VMware ESXi contains an arbitrary write vulnerability. A malicious actor with privileges within the VMX process may trigger an arbitrary kernel write leading to an escape of the sandbox.

CWE-123CWE-787Mar 4, 2025
CVSS8.2v3.1EPSS0.997%PoCs0SignalsListed in CISA KEVKnown ransomware useNo Nuclei templatesSTIX

VMware ESXi and Workstation TOCTOU Race Condition Vulnerability

VMware ESXi, and Workstation contain a TOCTOU (Time-of-Check Time-of-Use) vulnerability that leads to an out-of-bounds write. A malicious actor with local administrative privileges on a virtual machine may exploit this issue to execute code as the virtual machine's VMX process running on the host.

CWE-367Mar 4, 2025
CVSS9.3v3.1EPSS1.56%PoCs0SignalsListed in CISA KEVKnown ransomware useNo Nuclei templatesSTIX

VMware ESXi Authentication Bypass Vulnerability

VMware ESXi contains an authentication bypass vulnerability. A malicious actor with sufficient Active Directory (AD) permissions can gain full access to an ESXi host that was previously configured to use AD for user management https://blogs.vmware.com/vsphere/2012/09/joining-vsphere-hosts-to-active-directory.html by re-creating the configured AD group ('ESXi Admins' by default) after it was deleted from AD.

CWE-287CWE-305Jun 25, 2024
CVSS6.8v3.1EPSS26%PoCs2SignalsListed in CISA KEVKnown ransomware useNo Nuclei templatesSTIX

The storage controllers on VMware ESXi, Workstation, and Fusion have out-of-bounds read/write vulnerability. A malicious actor with access to a virtual machine with storage controllers enabled may exploit this issue to create a denial of service condition or execute code on the hypervisor from a virtual machine in conjunction with other issues.

CWE-125CWE-787May 21, 2024
CVSS8.1v3.1EPSS0.165%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

Out-of-bounds write vulnerability

VMware ESXi contains an out-of-bounds write vulnerability. A malicious actor with privileges within the VMX process may trigger an out-of-bounds write leading to an escape of the sandbox.

CWE-787Mar 5, 2024
CVSS7.9v3.1EPSS0.501%PoCs0SignalsNot listed in CISA KEVKnown ransomware useNo Nuclei templatesSTIX

Use-after-free vulnerability

VMware ESXi, Workstation, and Fusion contain a use-after-free vulnerability in the UHCI USB controller. A malicious actor with local administrative privileges on a virtual machine may exploit this issue to execute code as the virtual machine's VMX process running on the host. On ESXi, the exploitation is contained within the VMX sandbox whereas, on Workstation and Fusion, this may lead to code execution on the machine where Workstation or Fusion is installed.

CWE-416Mar 5, 2024
CVSS9.3v3.1EPSS0.645%PoCs0SignalsNot listed in CISA KEVKnown ransomware useNo Nuclei templatesSTIX

Use-after-free vulnerability

VMware ESXi, Workstation, and Fusion contain a use-after-free vulnerability in the XHCI USB controller. A malicious actor with local administrative privileges on a virtual machine may exploit this issue to execute code as the virtual machine's VMX process running on the host. On ESXi, the exploitation is contained within the VMX sandbox whereas, on Workstation and Fusion, this may lead to code execution on the machine where Workstation or Fusion is installed.

CWE-416Mar 5, 2024
CVSS9.3v3.1EPSS3.54%PoCs0SignalsNot listed in CISA KEVKnown ransomware useNo Nuclei templatesSTIX

VMware ESXi OpenSLP Use-After-Free Vulnerability

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 ESXi650-202010401-SG) has a use-after-free issue. A malicious actor residing in the management network who has access to port 427 on an ESXi machine may be able to trigger a use-after-free in the OpenSLP service resulting in remote code execution.

CWE-416Oct 20, 2020
CVSS9.8v3.1EPSS83%PoCs2SignalsListed in CISA KEVKnown ransomware useNo Nuclei templatesSTIX

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.

CWE-79Apr 29, 2020
CVSS9.3v3.1EPSS1.31%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

VMware ESXi 6.5 suffers from partial denial of service vulnerability in hostd process. Patch ESXi650-201907201-UG for this issue is available.

Jul 11, 2019
CVSS5.3v3.1EPSS1.7%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

VMware ESXi (6.7 before ESXi670-201904101-SG and 6.5 before ESXi650-201903001), Workstation (15.x before 15.0.3 and 14.x before 14.1.6), Fusion (11.x before 11.0.3 and 10.x before 10.1.6) contain multiple out-of-bounds read vulnerabilities in the shader translator. Exploitation of these issues requires an attacker to have access to a virtual machine with 3D graphics enabled. Successful exploitation of these issues may lead to information disclosure or may allow attackers with normal user privile

CWE-125Apr 15, 2019
CVSS6.8v3.0EPSS1.11%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

VMware ESXi (6.7 before ESXi670-201904101-SG and 6.5 before ESXi650-201903001), Workstation (15.x before 15.0.3 and 14.x before 14.1.6), Fusion (11.x before 11.0.3 and 10.x before 10.1.6) updates address an out-of-bounds read vulnerability. Exploitation of this issue requires an attacker to have access to a virtual machine with 3D graphics enabled. Successful exploitation of this issue may lead to information disclosure.The workaround for this issue involves disabling the 3D-acceleration feature

CWE-125Apr 15, 2019
CVSS5.9v3.0EPSS1.05%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

VMware ESXi (6.7 before ESXi670-201904101-SG and 6.5 before ESXi650-201903001), Workstation (15.x before 15.0.3 and 14.x before 14.1.6), Fusion (11.x before 11.0.3 and 10.x before 10.1.6) updates address an out-of-bounds vulnerability with the vertex shader functionality. Exploitation of this issue requires an attacker to have access to a virtual machine with 3D graphics enabled. Successful exploitation of this issue may lead to information disclosure or may allow attackers with normal user priv

CWE-125Apr 15, 2019
CVSS6.8v3.0EPSS1.67%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

VMware ESXi (6.7 before ESXi670-201810101-SG, 6.5 before ESXi650-201808401-BG, and 6.0 before ESXi600-201808401-BG), Workstation (14.x before 14.1.3) and Fusion (10.x before 10.1.3) contain an out-of-bounds read vulnerability in SVGA device. This issue may allow a guest to execute code on the host.

CWE-125Oct 16, 2018
CVSS8.8v3.1EPSS0.475%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

VMware ESXi (6.7, 6.5, 6.0), Workstation (15.x and 14.x) and Fusion (11.x and 10.x) contain a denial-of-service vulnerability due to an infinite loop in a 3D-rendering shader. Successfully exploiting this issue may allow an attacker with normal user privileges in the guest to make the VM unresponsive, and in some cases, possibly result other VMs on the host or the host itself becoming unresponsive.

CWE-835Oct 9, 2018
CVSS6.5v3.0EPSS0.426%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

VMware ESXi (6.7 before ESXi670-201806401-BG, 6.5 before ESXi650-201806401-BG, 6.0 before ESXi600-201806401-BG and 5.5 before ESXi550-201806401-BG), Workstation (14.x before 14.1.2), and Fusion (10.x before 10.1.2) contain a denial-of-service vulnerability due to NULL pointer dereference issue in RPC handler. Successful exploitation of this issue may allow attackers with normal user privileges to crash their VMs.

CWE-476Jul 25, 2018
CVSS6.5v3.1EPSS3%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

VMware ESXi (6.0 before ESXi600-201711101-SG, 5.5 ESXi550-201709101-SG), Workstation (12.x before 12.5.8), and Fusion (8.x before 8.5.9) contain a vulnerability that could allow an authenticated VNC session to cause a stack overflow via a specific set of VNC packets. Successful exploitation of this issue could result in remote code execution in a virtual machine via the authenticated VNC session. Note: In order for exploitation to be possible in ESXi, VNC must be manually enabled in a virtual ma

CWE-119Dec 20, 2017
CVSS8.8v3.1EPSS3.16%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX

The ESXi Host Client in VMware ESXi (6.5 before ESXi650-201712103-SG, 5.5 before ESXi600-201711103-SG and 5.5 before ESXi550-201709102-SG) contains a vulnerability that may allow for stored cross-site scripting (XSS). An attacker can exploit this vulnerability by injecting Javascript, which might get executed when other users access the Host Client.

CWE-79Dec 20, 2017
CVSS6.1v3.1EPSS0.91%PoCs0SignalsNot listed in CISA KEVNo known ransomware useNo Nuclei templatesSTIX