CVE-2020-3991

HIGH
7.1
CVSS Score
Published: October 16, 2020 at 01:15 PM UTC
Updated: June 17, 2026 at 03:19 AM UTC
1 product affected across 1 vendorHorizon Client· also runs on 1 platform

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Severity
HIGH7.1
Exploit prediction
EPSS 0.3%

Description

VMware Horizon Client for Windows (5.x before 5.5.0) contains a denial-of-service vulnerability due to a file system access control issue during install time. Successful exploitation of this issue may allow an attacker to overwrite certain admin privileged files through a symbolic link attack at install time. This will result into a denial-of-service condition on the machine where Horizon Client for Windows is installed.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 5.5.05.0.0 ≤ v < 5.5.0
Affected range stops below 5.5.0, so it looks safe — our inference, not a vendor statement
microsoft-windows (environment)

Runs on — not affected

The affected product only carries this flaw when running on these platforms. The platforms themselves are not vulnerable.

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (1)

CVSS

Attack Vector
LOCAL
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
NVD-CWE-Other

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