CVE-2022-20069

Local privilege escalation via USB preloader overflow

Published Apr 11, 2022 · Updated Aug 3, 2024

Integer overflow in the MediaTek USB preloader on listed chipsets running Android 10.0 through 12.0 allows attackers to escalate privileges. The USB preloader performs integer arithmetic that can overflow and drive an out-of-bounds memory write. Exploitation requires physical access and user interaction, but no existing execution privileges, and the resulting memory corruption enables local privilege escalation.

CVSS severity6.6
Medium
EPSS probability0.13%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Integer overflow in the MediaTek USB preloader on listed chipsets running Android 10.0 through 12.0 allows attackers to escalate privileges. The USB preloader performs integer arithmetic that can overflow and drive an out-of-bounds memory write. Exploitation requires physical access and user interaction, but no existing execution privileges, and the resulting memory corruption enables local privilege escalation.

The record

CVE
CVE-2022-20069
Published
Apr 11, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-190, T1404
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 11, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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 vectorphysical
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

4.4NVDAV:L/AC:M/Au:N/C:P/I:P/A:P
6.6NVDCVSS:3.1/AV:P/AC:L/PR:N/UI:R/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)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-190Integer Overflow or Wraparound
T1404Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

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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