VMware Workstation (15.x before 15.5.2) and Horizon Client for Windows (5.x and prior before 5.4.0) contain a denial-of-service vulnerabili…

published 2020-03-17 6y ago modified 2026-06-17 4mo ago also EUVD-2020-25216

cvss: 3.8; 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 19%
public exploits: 0; none known

VMware Workstation (15.x before 15.5.2) and Horizon Client for Windows (5.x and prior before 5.4.0) contain a denial-of-service vulnerability due to a heap-overflow issue in Cortado Thinprint. Attackers with non-administrative access to a guest VM with virtual printing enabled may exploit this issue to create a denial-of-service condition of the Thinprint service running on the system where Workstation or Horizon Client is installed.

Patch / fix

fixed in 2

vmware horizon_client 5.4.0
vmware workstation 15.5.2

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Exploit prediction

0.27% chance of exploitation in the next 30 days, higher than 19% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by	version	score	vector
NVD	3.1	3.8	CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/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

VMware rss critical rss

References

vmware.com /security/advisories/VMSA-2020-0005.html
vendor-advisory

Sources

CVE List CVE-2020-3951
NVD CVE-2020-3951

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