CVE-2020-9332Public exploit

Local privilege escalation via unrestricted driver IOCTLs

Published Jun 17, 2020 · Updated Aug 4, 2024

Privilege escalation in FabulaTech USB for Remote Desktop through 2020-02-19 allows local users to gain elevated privileges. ftusbbus2.sys creates its device object with IoCreateDevice without applying an access-restricting security descriptor, exposing IOCTLs that let low-integrity callers create and control trusted software USB HID devices. Low-privilege local access is sufficient to inject input through a fake keyboard or mouse, including interaction with a UAC consent dialog, without additional user interaction.

CVSS severity7.8
High
EPSS probability0.50%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Privilege escalation in FabulaTech USB for Remote Desktop through 2020-02-19 allows local users to gain elevated privileges. ftusbbus2.sys creates its device object with IoCreateDevice without applying an access-restricting security descriptor, exposing IOCTLs that let low-integrity callers create and control trusted software USB HID devices. Low-privilege local access is sufficient to inject input through a fake keyboard or mouse, including interaction with a UAC consent dialog, without additional user interaction.

The record

CVE
CVE-2020-9332
Published
Jun 17, 2020
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
T1548.002
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 17, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.6NVDAV:L/AC:L/Au:N/C:P/I:P/A:P
7.8NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

T1548.002Bypass User Account Control

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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