← Vulnerability feed

Vulnerability record · CVE-2020-3999 · published 21 December 2020

CVE-2020-3999: Vmware workstation improper input validation vulnerability

Vmware · Workstation

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.

6.5 CVSS 3.1 Medium EPSS 0.38% · top 69.7% CWE-20 · Improper input validation
6.5CVSS 3.1 base score, v2 2.1
0.38%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

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.

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.vmware.com/security/advisories/VMSA-2020-0029.html PatchVendor Advisory
https://www.vmware.com/security/advisories/VMSA-2020-0029.html PatchVendor Advisory

Track CVE-2020-3999 inside VULONE

Watch it alongside the ransomware crews, C2 infrastructure and forum chatter that reference it, query it through the API and pull it into your SIEM over TAXII.

Start free Open in platform

Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2020-3992VMware ESXi OpenSLP use-after-free allows remote code executionOpenSLP as used in VMware ESXi contains a use-after-free flaw reachable over port 427 on the management network. An unauthenticated attacker with net…KEVEPSS 83%analysed9.8CVE-2019-5544OpenSLP heap out-of-bounds write in VMware ESXi and Horizon DaaSOpenSLP as shipped in VMware ESXi and Horizon DaaS contains a heap overwrite (out-of-bounds write) flaw. VMware rates it Critical with a maximum CVSS…KEVEPSS 97%analysed8.2CVE-2025-22224VMware ESXi and Workstation TOCTOU race leads to out-of-bounds writeVMware ESXi, Workstation, and related products contain a TOCTOU race condition that results in an out-of-bounds write. An attacker with local adminis…KEVEPSS 1.6%analysed8.2CVE-2025-22225VMware ESXi VMX arbitrary write enables sandbox escapeVMware ESXi contains an arbitrary write vulnerability in which a malicious actor with privileges within the VMX process can trigger an arbitrary kern…KEVEPSS 1.0%analysed7.8CVE-2020-3950VMware Fusion, VMRC and Horizon Client setuid privilege escalationVMware Fusion, VMware Remote Console for Mac and Horizon Client for Mac mishandle setuid binaries, allowing a local user to gain root. The flaw affec…KEVEPSS 7.3%analysed7.8CVE-2010-3904Linux Kernel RDS rds_page_copy_user Improper Input Validation Privilege EscalationThe rds_page_copy_user function in net/rds/page.c in the Linux kernel before 2.6.36 fails to properly validate addresses obtained from user space. A …KEVEPSS 16%analysed7.5CVE-2023-29552Service Location Protocol unauthenticated service registration enables DoS amplificationThe Service Location Protocol (SLP, RFC 2608) permits an unauthenticated, remote attacker to register arbitrary services. This allows spoofed UDP tra…KEVEPSS 64%analysed7.2CVE-2024-37085VMware ESXi AD group recreation authentication bypassVMware ESXi contains an authentication bypass where an actor with sufficient Active Directory permissions can regain full access to an ESXi host join…KEVEPSS 27%analysed

Source: NIST National Vulnerability Database (record CVE-2020-3999), CISA KEV, FIRST EPSS (scores of 2026-10-10). This page is refreshed as NVD updates the record.