CVE-2023-21351

Local privilege escalation via bound-service launch bypass

Published Oct 30, 2023 · Updated Aug 16, 2024

Elevation of privilege in Google Android 12, 12L, and 13 allows local users to launch background activities without user interaction. Six Framework service bind paths omit BIND_DENY_ACTIVITY_STARTS_PRE_34, so app-provided services inherit permission to start activities from the background. A locally installed app can trigger job, text-to-speech, sync, media-route, or print bindings and place an activity onscreen without user interaction.

CVSS severity7.7
High
EPSS probability0.12%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Elevation of privilege in Google Android 12, 12L, and 13 allows local users to launch background activities without user interaction. Six Framework service bind paths omit BIND_DENY_ACTIVITY_STARTS_PRE_34, so app-provided services inherit permission to start activities from the background. A locally installed app can trigger job, text-to-speech, sync, media-route, or print bindings and place an activity onscreen without user interaction.

The record

CVE
CVE-2023-21351
Published
Oct 30, 2023
Updated
Aug 16, 2024
Vendor
Google
Product
Android
Classifications
T1068
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 30, 2023CVE 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=12
  2. Affected versionversion=12.0
  3. Affected versionversion=12l
  4. Affected versionversion=12L
  5. Affected versionversion=13
  6. Affected versionversion=13.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Google · Androidversion=12; version=12.0; version=12l; version=12L; version=13; version=13.0

Published CVSS scores

7.7CISA-ADPCVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
8.8NVDCVSS: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.

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

T1068Exploitation for Privilege Escalation

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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