CVE-2022-20143Public exploit

Permanent service interruption via unbounded Zen rules

Published Jun 15, 2022 · Updated Aug 3, 2024

Resource exhaustion in Android 10 through 12L allows local users to permanently interrupt device service through automatic Zen rules. ZenModeHelper.addAutomaticZenRule accepted an unbounded number of rules per package, allowing repeated NotificationManager calls to consume persistent system resources. Exploitation requires user execution privileges and notification policy access but no user interaction, and successful abuse leaves the device in a persistently corrupted state.

CVSS severity5.5
Medium
EPSS probability0.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in Android 10 through 12L allows local users to permanently interrupt device service through automatic Zen rules. ZenModeHelper.addAutomaticZenRule accepted an unbounded number of rules per package, allowing repeated NotificationManager calls to consume persistent system resources. Exploitation requires user execution privileges and notification policy access but no user interaction, and successful abuse leaves the device in a persistently corrupted state.

The record

CVE
CVE-2022-20143
Published
Jun 15, 2022
Updated
Aug 3, 2024
Vendor
Google Cloud
Product
Android
Classifications
CWE-770, T1499.003
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 15, 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?

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

  1. Affected versionversion=Android-10 Android-11 Android-12 Android-12L

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Google Cloud · Androidversion=Android-10 Android-11 Android-12 Android-12L

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
4.9NIST NVDAV:L/AC:L/Au:N/C:N/I:N/A:C

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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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 exploitPublished

Weakness, pattern, technique

CWE-770Allocation of Resources Without Limits or Throttling
T1499.003Application Exhaustion Flood

Public exploit references

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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