CVE-2023-40094

Local privilege escalation via unguarded keyguard call

Published Dec 4, 2023 · Updated Aug 28, 2024

Missing authorization in Google Android 11, 12, 12L, 13, and 14 allows local users to bypass the lock screen without interaction. ActivityTaskManagerService.keyguardGoingAway clears the caller identity and begins keyguard dismissal without first enforcing the CONTROL_KEYGUARD permission. A locally installed application with ordinary execution rights can invoke the Binder method and gain access beyond the locked session.

CVSS severity7.8
High
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

Missing authorization in Google Android 11, 12, 12L, 13, and 14 allows local users to bypass the lock screen without interaction. ActivityTaskManagerService.keyguardGoingAway clears the caller identity and begins keyguard dismissal without first enforcing the CONTROL_KEYGUARD permission. A locally installed application with ordinary execution rights can invoke the Binder method and gain access beyond the locked session.

The record

CVE
CVE-2023-40094
Published
Dec 4, 2023
Updated
Aug 28, 2024
Vendor
Google
Product
Android
Classifications
CWE-862, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 4, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 28, 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=13
  5. Affected versionversion=14

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

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

Published CVSS scores

7.8NIST National Vulnerability DatabaseCVSS: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.

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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
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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