CVE-2020-3987

Severity: medium (CVSS 6.1 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.3% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2020-09-16 · updated 2026-06-17
Weakness: CWE-125

Description

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 Server: 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
VMware Workstation and Horizon Client for Windows: VMware Workstation (15.x), Horizon Client for Windows (5.x before 5.4.4)

How to fix

Upgrade to a fixed version: VMware Horizon Server 5.4.4; VMware Workstation Player 16.0.0; VMware Workstation Pro 16.0.0. Check the vendor advisory for mitigations.

References

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