CVE-2022-20489
Official description Straight from the sourceThe vendor's or NVD's own wording, published unedited. Authoritative, but often terse — it says what broke, rarely what to do.
NVD · uneditedIn many functions of AutomaticZenRule.java, there is a possible failure to persist permissions settings due to resource exhaustion. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.Product: AndroidVersions: Android-10 Android-11 Android-12 Android-12L Android-13Android ID: A-242703460
Technical summary Written by usOur analysis, written from the advisory, the CVSS vector and the affected-version data. It adds context the advisory leaves out, and never invents facts that are not in the source.
dbcve analysis · high confidenceA resource exhaustion vulnerability in AutomaticZenRule.java prevents proper persistence of permission settings across multiple functions. This allows a local attacker to escalate privileges without needing additional execution capabilities or user interaction, exploiting the failure in permission state management.
Verify against the referenced sources before acting — the references below are authoritative for this CVE, this summary is not.
Affected products & versions What the vendor confirmedThe version ranges the vendor confirmed as vulnerable. If your version sits inside a range here, treat yourself as exposed until you have upgraded.
NVD · CPE data= 10.0= 11.0= 12.0= 12.1= 13.0CVSS breakdown How the score is builtThe industry scoring standard. It rates how the flaw is reached, what it takes to exploit, and what an attacker gains — the score is derived from those, not the other way round.
From the vector- Attack vector
- Local
- Complexity
- Low
- Privileges
- Low
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- High
- Integrity
- High
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Am I affected? How to checkSteps we derive from the advisory and the affected-version data, so you can decide whether this CVE reaches your setup. They are a guide, not a scan — your own configuration is the authority.
dbcve checksWork through these to decide whether this CVE applies to you.
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Check Android versionGo to Settings > About Phone > Android version, or run 'adb shell getprop ro.build.version.release'Affected if Version is 10.0, 11.0, 12.0, 12.1, or 13.0
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Check security patch levelGo to Settings > About Phone > Security patch level, or run 'adb shell getprop ro.build.version.security_patch'Affected if Security patch level is earlier than the date that includes the fix for A-242703460 (consult Android Security Bulletin for the specific date)
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Verify Zen Rules configuration accessCheck if the device has any AutomaticZenRule (Do Not Disturb) rules configured in Settings > Sound > Do Not Disturb > SchedulesAffected if Any Zen Rules exist on the device, as the vulnerability exploits permission state management within these rules
The device is affected if running Android 10.0, 11.0, 12.0, 12.1, or 13.0 with a security patch level that predates the fix for A-242703460, and has Do Not Disturb/AutomaticZenRule schedules configured.
Generated from the published advisory. Verify against your own configuration.
Remediation Closing itWhat it takes to close this. Where a vendor fix exists we point at it; where none exists we say so plainly, and can build one. Effort estimates are scoped from the advisory, not from your codebase.
dbcve · scopedApply the Android security patch level that includes the fix for A-242703460. This is a framework-level vulnerability requiring a system update from Google; no user action beyond installing available security updates is required.
Android 13
- Check your Android device's current OS version in Settings > About Phone > Android version
- Upgrade your device to Android 13 (which includes the fix for this vulnerability)
- After upgrading, verify the Android security patch level is September 2022 or later in Settings > About Phone > Security patch level
- Ensure the upgrade completes successfully and permissions for AutomaticZenRule functions are properly persisted
Generated from the published advisory — verify against the referenced sources before acting.
- Consultation3.0 h
- Implementation12.0 h
- Testing6.0 h
- Review / QA4.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $7,008.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2022-20489 — or any other known-vulnerable package — straight from your lock files. Free and open source; it runs locally and uploads nothing.
References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.
Primary sourcesPractitioner notes
ContributedPeer-ranked notes from engineers who’ve handled CVE-2022-20489 in production — separate from our analysis above.
The advisory tells you what broke. It rarely tells you what actually worked. If you’ve dealt with this one, that detail is what the next engineer is searching for.
- The version that genuinely resolved it — not the one the vendor claimed
- A config change or rule that shut the vector down
- A gotcha in the upgrade path that cost you an afternoon
No notes yet
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A place for practitioners to share what actually worked: a mitigation you’ve tested, a configuration change, a version- or environment-specific caveat, or a link to a verified patch. The most useful notes rise to the top as peers upvote them, so the signal stays high.
- Verified mitigations, workarounds, and config changes
- Version or environment caveats, and links to real fixes
- No weaponised exploit code, or anything meant to cause harm
- No spam, self-promotion, credentials, or personal data