NewsSecurity Vulnerabilities

VMware Workstation SetGuestInfo Null Pointer Dereference Denial-of-Service Vulnerability [CVE-2020-3999]

CVE Number – CVE-2020-3999

This vulnerability allows local attackers to create a denial-of-service condition on affected installations of VMware Workstation. An attacker must first obtain the ability to execute low-privileged code on the target guest system in order to exploit this vulnerability.

The specific flaw exists within the implementation of the SetGuestInfo RPC function. The issue results from dereferencing a null pointer. An attacker can leverage this vulnerability to create a denial-of-service condition on the hypervisor.

Impacted Products
  • VMware ESXi
  • VMware Workstation
  • VMware Fusion
  • VMware Cloud Foundation

VMware has issued an update to correct this vulnerability. More details can be found at:


Duncan is a technology professional with over 20 years experience of working in various IT roles. He has a interest in cyber security, and has a wide range of other skills in radio, electronics and telecommunications.

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