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CVE-2020-3957

HIGH
7
CVSS Score
Published: May 29, 2020 at 07:37 PM UTC
Updated: June 17, 2026 at 03:19 AM UTC
3 products affected across 1 vendorFusionHorizon ClientRemote Console· also runs on 1 platform

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Severity
HIGH7
Exploit prediction
EPSS 0.2%

Description

VMware Fusion (11.x before 11.5.5), VMware Remote Console for Mac (11.x and prior) and VMware Horizon Client for Mac (5.x and prior) contain a local privilege escalation vulnerability due to a Time-of-check Time-of-use (TOCTOU) issue in the service opener. Successful exploitation of this issue may allow attackers with normal user privileges to escalate their privileges to root on the system where Fusion, VMRC and Horizon Client are installed.

Affected

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

Fusion· VMware
95%
11 ≤ v < 11.5.5
Affected range stops below 11.5.5, so it looks safe — our inference, not a vendor statement
apple-macos (environment)
Horizon Client· VMware
95%
v ≤ 5.4.05 ≤ v ≤ 5.x
apple-macos (environment)
Remote Console· VMware
95%
v ≤ 11.0.1v ≤ 11.x
apple-macos (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:

Patch and advisory references

References (1)

x_refsource_CONFIRMVendor Advisory
Source: [email protected]
https://www.vmware.com/security/advisories/VMSA-2020-0011.html

CVSS

7HIGH[email protected]
Attack Vector
LOCAL
Complexity
HIGH
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
HIGH
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-367

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