CVE-2020-3987: VMware Horizon Client

Medium severity, CVSS 6.1. EPSS: 0.3% chance of exploitation in the next 30 days.

VMware Workstation (15.x) and Horizon Client for Windows (5.x before 5.4.4) contain an out-of-bounds read vulnerability in Cortado ThinPrint component (EMR STRETCHDIBITS parser). A malicious actor with normal access to a virtual machine may be able to exploit these issues to create a partial denial-of-service condition or to leak memory from TPView process running on the system where Workstation or Horizon Client for Windows is installed.

Affected products

• VMware Horizon Client: from 5.0.0, before 5.4.4 (fixed in 5.4.4)
• VMware Workstation Player: from 15.0.0, before 16.0.0 (fixed in 16.0.0)
• VMware Workstation Pro: from 15.0.0, before 16.0.0 (fixed in 16.0.0)

Published 2020-09-16. Last modified 2026-06-17.