CVE-2024-40664
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 setupAccessibilityServices of AccessibilityFragment.java , there is a possible way to hide an enabled accessibility service due to a logic error in the code. This could lead to local denial of service with no additional execution privileges needed. User interaction is not needed for exploitation.
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 · moderate confidenceA logic error in the setupAccessibilityServices method of AccessibilityFragment.java in the Android framework allows an attacker to hide an enabled accessibility service, causing a local denial of service. The vulnerability requires no additional execution privileges or user interaction to exploit.
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= 13.0= 14.0CVSS 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
- None
- User interaction
- None
- Scope
- Unchanged
- Confidentiality
- None
- Integrity
- None
- Availability
- High
CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 'getprop ro.build.version.release' via ADBAffected if Version is 13.0 or 14.0 - only these specific versions are affected
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Verify accessibility services are configuredGo to Settings > Accessibility > Installed services, or check /data/system/accessibility_service_state.xml if accessibleAffected if Any accessibility service is enabled - the vulnerability hides enabled services
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Compare expected vs actual enabled servicesCross-reference currently enabled services against a known-good baseline or documented enabled servicesAffected if Enabled accessibility services are missing or hidden from the settings UI when they should be active
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Check accessibility service state persistenceRun 'dumpsys accessibility' via ADB to query the accessibility service manager stateAffected if Services show as enabled in dumpsys but are invisible in Settings UI, indicating the hide behavior
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Review system logs for accessibility anomaliesRun 'logcat -d | grep -i accessibility' via ADB to look for service state changes or errorsAffected if Logs show unexpected service state transitions or failures in setupAccessibilityServices
If the device runs Android 13.0 or 14.0 and accessibility services become unexpectedly hidden or unavailable while they remain enabled in the system, the environment is affected by this vulnerability.
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.
From vendor dataThis requires a code-level fix in the Android framework to correct the logic error in AccessibilityFragment.java that improperly handles enabled accessibility services. Organizations should apply the official Android security patch when available.
- Consultation3.0 h
- Implementation6.0 h
- Testing4.0 h
- Review / QA2.0 h
An estimate, not a bill — we confirm scope with you before any work starts. Need it this week? Rush from $4,224.
Scan for this in your stack
Free · runs locallyCheck whether your project pulls in CVE-2024-40664 — 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-2024-40664 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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- 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
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