CVE-2023-40109

Local privilege escalation via untyped USB parcel

Published Feb 15, 2024 · Updated Aug 16, 2024

Privilege escalation in Google Android 11 through 14 allows local users to launch a background activity through a crafted USB parcel. UsbConfiguration.createFromParcel uses an untyped Parcelable-array read, accepting objects that are not UsbInterface instances and bypassing type enforcement. Exploitation requires user interaction but no additional execution privileges and launches an otherwise disallowed background activity.

CVSS severity7.8
High
EPSS probability0.19%
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 Google Android 11 through 14 allows local users to launch a background activity through a crafted USB parcel. UsbConfiguration.createFromParcel uses an untyped Parcelable-array read, accepting objects that are not UsbInterface instances and bypassing type enforcement. Exploitation requires user interaction but no additional execution privileges and launches an otherwise disallowed background activity.

The record

CVE
CVE-2023-40109
Published
Feb 15, 2024
Updated
Aug 16, 2024
Vendor
Google
Product
Android
Classifications
CWE-266, T1068
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 15, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 16, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=11
  2. Affected versionversion=12
  3. Affected versionversion=12l
  4. Affected versionversion=12L
  5. Affected versionversion=13
  6. Affected versionversion=14

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Google · Androidversion=11; version=12; version=12l; version=12L; version=13; version=14

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
7.3CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-266Incorrect Privilege Assignment
T1068Exploitation 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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