Out-of-bounds read in VMware Workstation and Horizon Client for Windows
Priority LOW 27CWE-125Published · Updated
Key facts
- Attack vector
- Local
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- High · None · Low
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
VMware Workstation (15.x) and Horizon Client for Windows (5.x before 5.4.4) contain an out-of-bounds read vulnerability in Cortado ThinPrint component (EMF Parser). A malicious actor with normal access to a virtual machine may be able to exploit these issues to create a partial denial-of-service condition or to leak memory from TPView process running on the system where Workstation or Horizon Client for Windows is installed.
Why it matters now
EPSS 0.00301 22nd percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | VMware Workstation and Horizon Client for Windows | VMware Workstation (15.x), Horizon Client for Windows (5.x before 5.4.4) | — | No fix listed | CNA |
- VMware Workstation and Horizon Client for Windows Vendor— Affected VMware Workstation (15.x), Horizon Client for Windows (5.x before 5.4.4) Fixed in — No fix listed CNA
CPE configurations NVD · 3
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:vmware:horizon_client:*:*:*:*:*:windows:*:* | 5.0.0 to before 5.4.4 | Vulnerable | VMware |
| cpe:2.3:a:vmware:workstation_player:*:*:*:*:*:*:*:* | 15.0.0 to before 16.0.0 | Vulnerable | VMware |
| cpe:2.3:a:vmware:workstation_pro:*:*:*:*:*:*:*:* | 15.0.0 to before 16.0.0 | Vulnerable | VMware |
- cpe:2.3:a:vmware:horizon_client:*:*:*:*:*:windows:*:* Versions 5.0.0 to before 5.4.4 Vulnerable ·VMware
- cpe:2.3:a:vmware:workstation_player:*:*:*:*:*:*:*:* Versions 15.0.0 to before 16.0.0 Vulnerable ·VMware
- cpe:2.3:a:vmware:workstation_pro:*:*:*:*:*:*:*:* Versions 15.0.0 to before 16.0.0 Vulnerable ·VMware
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-3986
- 2026-10-03 Alias added: GHSA-jfxm-7j25-cffr
References
More VMware Horizon Client vulnerabilities
- TI-2020-03448 Improper privilege management in VMware Fusion, VMware Remote Console for Mac and Horizon… KEVCVSS 3.1HIGH 7.8
- TI-2020-03472 VMware Fusion (11.x before 11.5.5), VMware Remote Console for Mac (11.x and prior before… CVSS 3.1HIGH 7.8
- TI-2020-03459 Incorrect permission assignment in VMware Horizon Client for Windows CVSS 3.1HIGH 7.8
- TI-2019-03948 Incorrect permission assignment in VMware Horizon Client for Windows CVSS 3.1HIGH 7.8
- TI-2018-05086 VMware Horizon Client for Linux (4.x before 4.8.0 and prior) contains a local privilege… CVSS 3.0HIGH 7.8
- TI-2018-05092 Out-of-bounds read in VMware Horizon 6, Horizon 7, and Horizon Client CVSS 3.0MEDIUM 6.5
Sources
- CVE-2020-3986 · CVE Program
- CVE-2020-3986 · NVD
- FIRST EPSS
- GHSA-jfxm-7j25-cffr · GitHub Advisory Database · CC BY 4.0
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