CVE-2023-40106

Local privilege escalation via publicVersion token retention

Published Feb 15, 2024 · Updated Aug 27, 2024

Privilege escalation in Google Android 11 through 14 allows local users to launch an activity from the background without interaction. NotificationManagerService.sanitizeSbn fails to strip the activity-launch authorization token from notification.publicVersion before returning a notification to its app. An installed app with ordinary local execution can retrieve its notification and fire the embedded PendingIntent, bypassing background activity-launch limits without user interaction.

CVSS severity7.8
High
EPSS probability0.08%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Privilege escalation in Google Android 11 through 14 allows local users to launch an activity from the background without interaction. NotificationManagerService.sanitizeSbn fails to strip the activity-launch authorization token from notification.publicVersion before returning a notification to its app. An installed app with ordinary local execution can retrieve its notification and fire the embedded PendingIntent, bypassing background activity-launch limits without user interaction.

The record

CVE
CVE-2023-40106
Published
Feb 15, 2024
Updated
Aug 27, 2024
Vendor
Google
Product
Android
Classifications
CWE-269, T1548
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 15, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 27, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

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=11.0
  3. Affected versionversion=12
  4. Affected versionversion=12.0
  5. Affected versionversion=12.0l
  6. Affected versionversion=12L
  7. Affected versionversion=13
  8. Affected versionversion=13.0
  9. Affected versionversion=14
  10. Affected versionversion=14.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Google · Androidversion=11; version=11.0; version=12; version=12.0; version=12.0l; version=12L; version=13; version=13.0; version=14; version=14.0

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8CISA-ADPCVSS: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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-269Improper Privilege Management
T1548Abuse Elevation Control Mechanism

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo