CVE-2020-3989 json
VMware Workstation (15.x) and Horizon Client for Windows (5.x before 5.4.4) contain a denial of service vulnerability due to an out-of-boun…
published 2020-09-16 6 y ago modified 2026-06-17 4 mo ago also EUVD-2020-25254
- cvss
- 3.3
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 21%
- public exploits
- 0
- none known
Summary
VMware Workstation (15.x) and Horizon Client for Windows (5.x before 5.4.4) contain a denial of service vulnerability due to an out-of-bounds write issue in Cortado ThinPrint component. A malicious actor with normal access to a virtual machine may be able to exploit this issue to create a partial denial-of-service condition 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.
Patch / fix
- vmware horizon_client 5.4.4
- vmware workstation_player 16.0.0
- vmware workstation_pro 16.0.0
Exploit prediction
0.29% chance of exploitation in the next 30 days, higher than 21% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.1 | 3.3 | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L |
| NVD | 2.0 | 2.1 | AV:L/AC:L/Au:N/C:N/I:N/A:P |
Affected products
- n/a VMware Workstation and Horizon Client for Windows
Classification
- Weakness
-
- CWE-787 Out-of-bounds Write
- Technology feeds
References
-
vmware.com
/security/advisories/VMSA-2020-0020.html
vendor-advisory
Sources
- CVE List CVE-2020-3989
- NVD CVE-2020-3989
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