CVE-2020-3990

moderate-risk

Published 2020-09-16

VMware Workstation (15.x) and Horizon Client for Windows (5.x before 5.4.4) contain an information disclosure vulnerability due to an integer overflow issue in Cortado ThinPrint component. A malicious actor with normal access to a virtual machine may be able to exploit this issue to leak memory from TPView process running 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.

Do I need to act?

0.04% chance of exploitation

EPSS score — low exploit probability

Not on CISA KEV list

No confirmed active exploitation reported to CISA

Patch status unknown

Check vendor advisories for fix availability and mitigation guidance

CVSS 6.5/10 Medium

LOCAL / LOW complexity

Affected Products (3)

Horizon Client

Workstation Player

Workstation Pro

Affected Vendors

Vmware

References (2)

Vendor Advisory https://www.vmware.com/security/advisories/VMSA-2020-0020.html

/ 100

moderate-risk

Severity 21/34 · High

Exploitability 0/34 · Minimal

Exposure 9/34 · Low