VMware Workstation (15.x) and Horizon Client for Windows (5.x before 5.4.4) contain a denial of service vulnerability due to an…

Description

VMware Workstation (15.x) and Horizon Client for Windows (5.x before 5.4.4) contain a denial of service vulnerability due to an out-of-bounds write issue in Cortado ThinPrint component. A malicious actor with normal access to a virtual machine may be able to exploit this issue to create a partial denial-of-service condition on the system where Workstation or Horizon Client for Windows is installed. Exploitation is only possible if virtual printing has been enabled. This feature is not enabled by default on Workstation but it is enabled by default on Horizon Client.

Scores

EPSS (exploitation in 30 days)

0.29% · top 78% of all CVEs (6 Nov 2026)

The list uses the assigner's score when there is one, then CISA's, then NVD's: Low 3.3.

Weakness

• Denial-of-service vulnerability via Cortado ThinPrint
• CWE-787 (opens in a new tab)All about CWE-787 and its CVEs

Affected products

• VMware Workstation and Horizon Client for Windows

  • affected VMware Workstation (15.x), Horizon Client for Windows (5.x before 5.4.4)

References (1)

• https://www.vmware.com/security/advisories/VMSA-2020-0020.html (opens in a new tab)x_refsource_MISCx_transferred

Sources

The same CVE in the primary databases and aggregators, to check against.

• CVE.org record (opens in a new tab)
• CVE List JSON (GitHub) (opens in a new tab)
• NVD (opens in a new tab)
• FIRST EPSS (opens in a new tab)
• OSV.dev (opens in a new tab)
• GitHub Advisories (opens in a new tab)
• CIRCL Vulnerability-Lookup (opens in a new tab)

Badge for a README or a ticket

[![CVE-2020-3989](https://trackcve.app/badge/CVE-2020-3989.svg)](https://trackcve.app/cve/CVE-2020-3989)

Record last updated 4 Aug 2024, 07:52 UTC.