Medium severity · published May 24, 2021
CVE-2021-21987
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…
6.5
CVSS
0.6%
EPSS
No
On KEV
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.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
None
Confidentiality
High
Integrity
None
Availability
None
Scope
Changed
Exploitation
Is it being used?
Exploit prediction (EPSS)0.6% · higher than 46% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
HC
Horizon Client · Vmware
5.0.0 before 5.5.2 · source: NVD
WO
Workstation · Vmware
16.0.0 before 16.1.2 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2021-21987
CVE.org
https://www.cve.org/CVERecord?id=CVE-2021-21987
Patch
https://www.vmware.com/security/advisories/VMSA-2021-0009.html
Third Party Advisory
https://www.zerodayinitiative.com/advisories/ZDI-21-608/
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