Vulnerability · Published May 24, 2021 · Assigned by vmware

CVE-2021-21989

Medium 6.5

In plain English

A medium-severity security flaw in VMware Workstation Pro / Player (Workstation), VMware Horizon Client for Windows. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 40% of all known vulnerabilities).

Severity (CVSS NVD)6.5Medium

Exploit odds (30 days)0.5%top 60.5% of all CVEs

Exploited in the wildNo reportsnot in CISA KEV

Attack toolingNoneno public tooling known

Official description

VMware Workstation (16.x prior to 16.1.2) and Horizon Client for Windows (5.x prior to 5.5.2) contain out-of-bounds read vulnerability in the Cortado ThinPrint component (TTC Parser). A malicious actor with access to a virtual machine or remote desktop may be able to exploit these issues leading to information disclosure from the TPView process running on the system where Workstation or Horizon Client for Windows is installed.

Affected products (as reported)

Vendor	Product	Versions
n/a	VMware Workstation Pro / Player (Workstation), VMware Horizon Client for Windows	VMware Workstation (16.x prior to 16.1.2) and Horizon Client for Windows (5.x prior to 5.5.2)

References

https://www.vmware.com/security/advisories/VMSA-2021-0009.html x_refsource_MISC
https://www.zerodayinitiative.com/advisories/ZDI-21-610/ x_refsource_MISC