VMware ESXi VMware ESXi is a type-1 bare metal hypervisor.

ESXi Intel 800-Series Driver Info Disclosure (v<2.2.2.0 & 2.2.3.0)
CVE-2025-25058 3.3 - Low - February 10, 2026

Improper initialization for some ESXi kernel mode driver for the Intel(R) Ethernet 800-Series before version 2.2.2.0 (esxi 8.0) &amp; 2.2.3.0 (esxi 9.0) within Ring 1: Device Drivers may allow an information disclosure. Unprivileged software adversary with an authenticated user combined with a low complexity attack may enable data exposure. This result may potentially occur via local access when attack requirements are present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (low), integrity (none) and availability (none) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.

Improper Initialization

VMware ESXi Guest Operation Denial-of-Service via VMware Tools
CVE-2025-41226 - May 20, 2025

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.

VMware ESXi Guest VM Controlled Buffer Memory Corruption
CVE-2025-21460 7.8 - High - May 06, 2025

Memory corruption while processing a message, when the buffer is controlled by a Guest VM, the value can be changed continuously.

Improper Input Validation

VMware ESXi/Workstation/Fusion: OOB Read in HGFS Enables VM Memory Disclosure
CVE-2025-22226 7.1 - High - March 04, 2025

VMware ESXi, Workstation, and Fusion contain an information disclosure vulnerability due to an out-of-bounds read in HGFS. A malicious actor with administrative privileges to a virtual machine may be able to exploit this issue to leak memory from the vmx process.

Out-of-bounds Read

VMware ESXi Arbitrary Write Escape via VMX Kernel Write
CVE-2025-22225 8.2 - High - March 04, 2025

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.

Write-what-where Condition

VMware ESXi TOCTOU OOB Write Allows VM Admin Code Exec as VMX
CVE-2025-22224 9.3 - Critical - March 04, 2025

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.

TOCTTOU

Memory Corruption in VMware ESXi Hypervisor via Guest-Controlled Buffer
CVE-2024-53031 7.8 - High - March 03, 2025

Memory corruption while reading a type value from a buffer controlled by the Guest Virtual Machine.

Memory Corruption

VMware ESXi Virtual Input Config Memory Corruption
CVE-2024-38420 7.8 - High - February 03, 2025

Memory corruption while configuring a Hypervisor based input virtual device.

Memory Corruption

VMware ESXi Auth Bypass via Recreating AD Group
CVE-2024-37085 6.8 - Medium - June 25, 2024

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.

Authentication Bypass by Primary Weakness

VMware ESXi OOB Read Enables Local Admin DoS
CVE-2024-37086 - June 25, 2024

VMware ESXi contains an out-of-bounds read vulnerability. A malicious actor with local administrative privileges on a virtual machine with an existing snapshot may trigger an out-of-bounds read leading to a denial-of-service condition of the host.

OUT-OF-BDS READ/WRITE in VMware ESXi/WS/Fusion Storage Controllers
CVE-2024-22273 7.8 - High - May 21, 2024

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.

Out-of-bounds Read

VMware ESXi Memory Corruption via Unsynced Signed VM Image
CVE-2023-33119 8.4 - High - May 06, 2024

Memory corruption while loading a VM from a signed VM image that is not coherent in the processor cache.

TOCTTOU

VMware ESXi/Workstation/Fusion XHCI USB UAF Exposes VMX Host Code
CVE-2024-22252 6.7 - Medium - March 05, 2024

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.

Dangling pointer

VMware ESXi OOB Write Enables VMX Sandbox Escape
CVE-2024-22254 8.2 - High - March 05, 2024

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.

VMware ESXi/WS Fusion UHCI USB Use-After-Free, VM Escape
CVE-2024-22253 6.7 - Medium - March 05, 2024

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.

VMware ESXi/Workstation/Fusion: UHCI USB Info Disclosure
CVE-2024-22255 - March 05, 2024

VMware ESXi, Workstation, and Fusion contain an information disclosure vulnerability in the UHCI USB controller. A malicious actor with administrative access to a virtual machine may be able to exploit this issue to leak memory from the vmx process.  

VMware ESXi: Compromised Host Forces VMware Tools Auth Failure
CVE-2023-20867 3.9 - Low - June 13, 2023

A fully compromised ESXi host can force VMware Tools to fail to authenticate host-to-guest operations, impacting the confidentiality and integrity of the guest virtual machine.

authentification

CVE-2023-29552: Unauth Remote DoS via SLP Service Registration Spoofing
CVE-2023-29552 7.5 - High - April 25, 2023

The Service Location Protocol (SLP, RFC 2608) allows an unauthenticated, remote attacker to register arbitrary services. This could allow the attacker to use spoofed UDP traffic to conduct a denial-of-service attack with a significant amplification factor.

VMware ESXi/WS/Fusion EHCI heap OOB write (cve-2022-31705)
CVE-2022-31705 8.2 - High - December 14, 2022

VMware ESXi, Workstation, and Fusion contain a heap out-of-bounds write vulnerability in the USB 2.0 controller (EHCI). 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.

Memory Corruption

Memory Corruption in VMware ESXi Socket Handling Enables Local Esc.
CVE-2022-31696 8.8 - High - December 13, 2022

VMware ESXi contains a memory corruption vulnerability that exists in the way it handles a network socket. A malicious actor with local access to ESXi may exploit this issue to corrupt memory leading to an escape of the ESXi sandbox.

Memory Corruption

VMware ESXi Heap-Ovflw in Sandbox Process Causes Partial Info Disclosure
CVE-2022-31699 3.3 - Low - December 13, 2022

VMware ESXi contains a heap-overflow vulnerability. A malicious local actor with restricted privileges within a sandbox process may exploit this issue to achieve a partial information disclosure.

Memory Corruption

VMware ESXi Null-Pointer Deref: VMX Privilege => Host DoS
CVE-2022-31681 6.5 - Medium - October 07, 2022

VMware ESXi contains a null-pointer deference vulnerability. A malicious actor with privileges within the VMX process only, may create a denial of service condition on the host.

NULL Pointer Dereference

Aliases in the branch predictor may cause some AMD processors to predict the wrong branch type potentially leading to information disclosure.
CVE-2022-23825 6.5 - Medium - July 14, 2022

Aliases in the branch predictor may cause some AMD processors to predict the wrong branch type potentially leading to information disclosure.

Exposure of Resource to Wrong Sphere

Intel microprocessor generations 6 to 8 are affected by a new Spectre variant
CVE-2022-29901 6.5 - Medium - July 12, 2022

Intel microprocessor generations 6 to 8 are affected by a new Spectre variant that is able to bypass their retpoline mitigation in the kernel to leak arbitrary data. An attacker with unprivileged user access can hijack return instructions to achieve arbitrary speculative code execution under certain microarchitecture-dependent conditions.

Exposure of Resource to Wrong Sphere

Incomplete cleanup in specific special register write operations for some Intel(R) Processors may
CVE-2022-21166 5.5 - Medium - June 15, 2022

Incomplete cleanup in specific special register write operations for some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.

Insufficient Cleanup

Incomplete cleanup of multi-core shared buffers for some Intel(R) Processors may
CVE-2022-21123 5.5 - Medium - June 15, 2022

Incomplete cleanup of multi-core shared buffers for some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.

Insufficient Cleanup

Incomplete cleanup of microarchitectural fill buffers on some Intel(R) Processors may
CVE-2022-21125 5.5 - Medium - June 15, 2022

Incomplete cleanup of microarchitectural fill buffers on some Intel(R) Processors may allow an authenticated user to potentially enable information disclosure via local access.

Insufficient Cleanup

VMware ESXi contains an unauthorized access vulnerability due to VMX having access to settingsd authorization tickets
CVE-2021-22042 7.8 - High - February 16, 2022

VMware ESXi contains an unauthorized access vulnerability due to VMX having access to settingsd authorization tickets. A malicious actor with privileges within the VMX process only, may be able to access settingsd service running as a high privileged user.

AuthZ

ESXi contains a slow HTTP POST denial-of-service vulnerability in rhttpproxy
CVE-2021-22050 7.5 - High - February 16, 2022

ESXi contains a slow HTTP POST denial-of-service vulnerability in rhttpproxy. A malicious actor with network access to ESXi may exploit this issue to create a denial-of-service condition by overwhelming rhttpproxy service with multiple requests.

Allocation of Resources Without Limits or Throttling

VMware ESXi, Workstation, and Fusion contain a use-after-free vulnerability in the XHCI USB controller
CVE-2021-22040 6.7 - Medium - February 16, 2022

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.

Dangling pointer

VMware ESXi, Workstation, and Fusion contain a double-fetch vulnerability in the UHCI USB controller
CVE-2021-22041 6.7 - Medium - February 16, 2022

VMware ESXi, Workstation, and Fusion contain a double-fetch 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.

VMware ESXi contains a TOCTOU (Time-of-check Time-of-use) vulnerability that exists in the way temporary files are handled
CVE-2021-22043 7.5 - High - February 16, 2022

VMware ESXi contains a TOCTOU (Time-of-check Time-of-use) vulnerability that exists in the way temporary files are handled. A malicious actor with access to settingsd, may exploit this issue to escalate their privileges by writing arbitrary files.

TOCTTOU

VMware ESXi (7.0
CVE-2021-22045 7.8 - High - January 04, 2022

VMware ESXi (7.0, 6.7 before ESXi670-202111101-SG and 6.5 before ESXi650-202110101-SG), VMware Workstation (16.2.0) and VMware Fusion (12.2.0) contains a heap-overflow vulnerability in CD-ROM device emulation. A malicious actor with access to a virtual machine with CD-ROM device emulation may be able to exploit this vulnerability in conjunction with other issues to execute code on the hypervisor from a virtual machine.

Memory Corruption

OpenSLP as used in ESXi has a denial-of-service vulnerability due a heap out-of-bounds read issue
CVE-2021-21995 7.5 - High - July 13, 2021

OpenSLP as used in ESXi has a denial-of-service vulnerability due a heap out-of-bounds read issue. A malicious actor with network access to port 427 on ESXi may be able to trigger a heap out-of-bounds read in OpenSLP service resulting in a denial-of-service condition.

Out-of-bounds Read

SFCB (Small Footprint CIM Broker) as used in ESXi has an authentication bypass vulnerability
CVE-2021-21994 9.8 - Critical - July 13, 2021

SFCB (Small Footprint CIM Broker) as used in ESXi has an authentication bypass vulnerability. A malicious actor with network access to port 5989 on ESXi may exploit this issue to bypass SFCB authentication by sending a specially crafted request.

authentification

OpenSLP as used in ESXi (7.0 before ESXi70U1c-17325551
CVE-2021-21974 8.8 - High - February 24, 2021

OpenSLP as used in ESXi (7.0 before ESXi70U1c-17325551, 6.7 before ESXi670-202102401-SG, 6.5 before ESXi650-202102101-SG) has a heap-overflow vulnerability. A malicious actor residing within the same network segment as ESXi who has access to port 427 may be able to trigger the heap-overflow issue in OpenSLP service resulting in remote code execution.

Memory Corruption

VMware ESXi (7.0 prior to ESXi70U1c-17325551)
CVE-2020-3999 6.5 - Medium - December 21, 2020

VMware ESXi (7.0 prior to ESXi70U1c-17325551), VMware Workstation (16.x prior to 16.0 and 15.x prior to 15.5.7), VMware Fusion (12.x prior to 12.0 and 11.x prior to 11.5.7) and VMware Cloud Foundation contain a denial of service vulnerability due to improper input validation in GuestInfo. A malicious actor with normal user privilege access to a virtual machine can crash the virtual machine's vmx process leading to a denial of service condition.

Improper Input Validation

VMware ESXi (7.0 before ESXi70U1b-17168206
CVE-2020-4004 8.2 - High - November 20, 2020

VMware ESXi (7.0 before ESXi70U1b-17168206, 6.7 before ESXi670-202011101-SG, 6.5 before ESXi650-202011301-SG), Workstation (15.x before 15.5.7), Fusion (11.x before 11.5.7) 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.

Dangling pointer

VMware ESXi (7.0 before ESXi70U1b-17168206, 6.7 before ESXi670-202011101-SG, 6.5 before ESXi650-202011301-SG) contains a privilege-escalation vulnerability
CVE-2020-4005 7.8 - High - November 20, 2020

VMware ESXi (7.0 before ESXi70U1b-17168206, 6.7 before ESXi670-202011101-SG, 6.5 before ESXi650-202011301-SG) contains a privilege-escalation vulnerability that exists in the way certain system calls are being managed. A malicious actor with privileges within the VMX process only, may escalate their privileges on the affected system. Successful exploitation of this issue is only possible when chained with another vulnerability (e.g. CVE-2020-4004)

Improper Privilege Management

VMware ESXi (7.0 before ESXi_7.0.1-0.0.16850804
CVE-2020-3981 5.8 - Medium - October 20, 2020

VMware ESXi (7.0 before ESXi_7.0.1-0.0.16850804, 6.7 before ESXi670-202008101-SG, 6.5 before ESXi650-202007101-SG), Workstation (15.x), Fusion (11.x before 11.5.6) contain an out-of-bounds read vulnerability due to a time-of-check time-of-use issue in ACPI device. A malicious actor with administrative access to a virtual machine may be able to exploit this issue to leak memory from the vmx process.

TOCTTOU

VMware ESXi (7.0 before ESXi_7.0.1-0.0.16850804
CVE-2020-3982 7.7 - High - October 20, 2020

VMware ESXi (7.0 before ESXi_7.0.1-0.0.16850804, 6.7 before ESXi670-202008101-SG, 6.5 before ESXi650-202007101-SG), Workstation (15.x), Fusion (11.x before 11.5.6) contain an out-of-bounds write vulnerability due to a time-of-check time-of-use issue in ACPI device. A malicious actor with administrative access to a virtual machine may be able to exploit this vulnerability to crash the virtual machine's vmx process or corrupt hypervisor's memory heap.

Memory Corruption

OpenSLP as used in VMware ESXi (7.0 before ESXi_7.0.1-0.0.16850804
CVE-2020-3992 9.8 - Critical - October 20, 2020

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.

Dangling pointer

In VMware ESXi (6.7 before ESXi670-201908101-SG
CVE-2020-3995 5.3 - Medium - October 20, 2020

In VMware ESXi (6.7 before ESXi670-201908101-SG, 6.5 before ESXi650-202007101-SG), Workstation (15.x before 15.1.0), Fusion (11.x before 11.1.0), the VMCI host drivers used by VMware hypervisors contain a memory leak vulnerability. A malicious actor with access to a virtual machine may be able to trigger a memory leak issue resulting in memory resource exhaustion on the hypervisor if the attack is sustained for extended periods of time.

Memory Leak

VMware ESXi and vCenter Server contain a partial denial of service vulnerability in their respective authentication services
CVE-2020-3976 5.3 - Medium - August 21, 2020

VMware ESXi and vCenter Server contain a partial denial of service vulnerability in their respective authentication services. VMware has evaluated the severity of this issue to be in the Moderate severity range with a maximum CVSSv3 base score of 5.3.

Resource Exhaustion

VMware ESXi (7.0 before ESXi_7.0.0-1.20.16321839
CVE-2020-3970 3.8 - Low - June 25, 2020

VMware ESXi (7.0 before ESXi_7.0.0-1.20.16321839, 6.7 before ESXi670-202004101-SG and 6.5 before ESXi650-202005401-SG), Workstation (15.x before 15.5.5), and Fusion (11.x before 11.5.5) contain an out-of-bounds read vulnerability in the Shader functionality. A malicious actor with non-administrative local access to a virtual machine with 3D graphics enabled may be able to exploit this vulnerability to crash the virtual machine's vmx process leading to a partial denial of service condition.

Out-of-bounds Read

VMware ESXi (7.0 before ESXi_7.0.0-1.20.16321839
CVE-2020-3964 4.7 - Medium - June 25, 2020

VMware ESXi (7.0 before ESXi_7.0.0-1.20.16321839, 6.7 before ESXi670-202006401-SG and 6.5 before ESXi650-202005401-SG), Workstation (15.x before 15.5.2), and Fusion (11.x before 11.5.2) contain an information leak in the EHCI USB controller. A malicious actor with local access to a virtual machine may be able to read privileged information contained in the hypervisor's memory. Additional conditions beyond the attacker's control need to be present for exploitation to be possible.

Use of Uninitialized Resource

VMware ESXi (7.0 before ESXi_7.0.0-1.20.16321839
CVE-2020-3968 8.2 - High - June 25, 2020

VMware ESXi (7.0 before ESXi_7.0.0-1.20.16321839, 6.7 before ESXi670-202004101-SG and 6.5 before ESXi650-202005401-SG), Workstation (15.x before 15.5.5), and Fusion (11.x before 11.5.5) contain an out-of-bounds write vulnerability in the USB 3.0 controller (xHCI). A malicious actor with local administrative privileges on a virtual machine may be able to exploit this issue to crash the virtual machine's vmx process leading to a denial of service condition or execute code on the hypervisor from a virtual machine. Additional conditions beyond the attacker's control must be present for exploitation to be possible.

Memory Corruption

VMware ESXi (7.0 before ESXi_7.0.0-1.20.16321839
CVE-2020-3967 7.5 - High - June 25, 2020

VMware ESXi (7.0 before ESXi_7.0.0-1.20.16321839, 6.7 before ESXi670-202004101-SG and 6.5 before ESXi650-202005401-SG), Workstation (15.x before 15.5.5), and Fusion (11.x before 11.5.5) contain a heap-overflow vulnerability in the USB 2.0 controller (EHCI). A malicious actor with local access to a virtual machine may be able to exploit this vulnerability to execute code on the hypervisor from a virtual machine. Additional conditions beyond the attacker's control must be present for exploitation to be possible.

Memory Corruption

VMware ESXi (7.0 before ESXi_7.0.0-1.20.16321839
CVE-2020-3966 7.5 - High - June 25, 2020

VMware ESXi (7.0 before ESXi_7.0.0-1.20.16321839, 6.7 before ESXi670-202004101-SG and 6.5 before ESXi650-202005401-SG), Workstation (15.x before 15.5.2), and Fusion (11.x before 11.5.2) contain a heap-overflow due to a race condition issue in the USB 2.0 controller (EHCI). A malicious actor with local access to a virtual machine may be able to exploit this vulnerability to execute code on the hypervisor from a virtual machine. Additional conditions beyond the attacker's control must be present for exploitation to be possible.

Race Condition

VMware ESXi (7.0 before ESXi_7.0.0-1.20.16321839
CVE-2020-3965 5.5 - Medium - June 25, 2020

VMware ESXi (7.0 before ESXi_7.0.0-1.20.16321839, 6.7 before ESXi670-202006401-SG and 6.5 before ESXi650-202005401-SG), Workstation (15.x before 15.5.2), and Fusion (11.x before 11.5.2) contain an information leak in the XHCI USB controller. A malicious actor with local access to a virtual machine may be able to read privileged information contained in hypervisor memory from a virtual machine.

Out-of-bounds Read