AndroidOperating system · Google

CVE-2024-49747

CRITICAL · 9.8 CVSS v3.1 Published 2025-01-21
Mitigation only
No fix yet — a mitigation exists. There is no fixed release. A documented workaround reduces exposure in the meantime.
See remediation →
100/100
Remediation priority · Urgent
Remotely reachable No privileges Zero-click

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 · unedited
In gatts_process_read_by_type_req of gatt_sr.cc, there is a possible out of bounds write due to a logic error in the code. This could lead to remote code execution 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 · high confidence

A logic error in the GATT server's read-by-type request handler (gatts_process_read_by_type_req in gatt_sr.cc) causes an out-of-bounds write vulnerability. This buffer overflow in the Bluetooth stack can be exploited remotely without authentication or user interaction, allowing arbitrary code execution.

MitigationApply vendor patches for the affected Bluetooth stack implementation. Until a patch is available, consider restricting Bluetooth access to trusted devices and networks to reduce attack surface.

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
AndroidOperating system
Affected:= 12.0= 12.1= 13.0= 14.0= 15.0

CVSS 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
Network
Complexity
Low
Privileges
None
User interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:N/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 checks

Work through these to decide whether this CVE applies to you.

  1. Check Android version
    Go to Settings > About Phone > Android version, or run 'getprop ro.build.version.release' via ADB shell
    Affected if The installed version matches 12.0, 12.1, 13.0, 14.0, or 15.0
  2. Verify Bluetooth is enabled
    Check Settings > Bluetooth, or run 'settings get global bluetooth_on' via ADB shell (returns 1 if enabled)
    Affected if Bluetooth is turned on and the Android version is in the affected list
  3. Confirm GATT server usage
    Inspect running processes for apps that advertise Bluetooth services using GATT, or monitor with 'adb shell dumpsys bluetooth_manager' to identify active GATT server connections
    Affected if Any application is acting as a GATT server (Bluetooth peripheral mode) while running an affected Android version

A device is affected if it runs Android 12.0, 12.1, 13.0, 14.0, or 15.0 with Bluetooth enabled and actively using GATT server functionality.

Generated from the published advisory. Verify against your own configuration.

Check your environment

Paste your version and any relevant configuration and it will be compared against the affected criteria above. Do not include secrets or credentials.

AI-assisted, checked against the advisory. Informational, not a guarantee.

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 · scoped
Mitigation available No clean upgrade yet — mitigate in the meantime
Mitigation

Apply vendor patches for the affected Bluetooth stack implementation. Until a patch is available, consider restricting Bluetooth access to trusted devices and networks to reduce attack surface.

Recommended fix High confidence

Latest Android security update containing the January 2025 security patch level (or subsequent updates)

  1. 1. Navigate to Settings > System > Software Update (or Settings > About Phone > System Update) on the affected Android device
  2. 2. Check for and install any available system updates
  3. 3. Ensure the device receives the latest Android security patch level
  4. 4. For enterprise or non-Pixel devices, verify with the device manufacturer that the Bluetooth security update has been applied
  5. 5. If no update is available from the manufacturer, consider migrating to a device with active security support
Caveat Standard Android upgrade considerations apply - ensure app compatibility and backup data before updating

Generated from the published advisory — verify against the referenced sources before acting.

Fix this in Android Scoped from the published advisory
  • Consultation2.0 h
  • Implementation8.0 h
  • Testing6.0 h
  • Review / QA3.0 h
19.0 hours of engineering $3,280
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Scan for this in your stack

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dbcve dependency scanner

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References Go to the primary sourcePrimary sources — vendor advisories, patches and trackers. Where our summary and a reference disagree, the reference wins.

Primary sources

Practitioner notes

Contributed

Peer-ranked notes from engineers who’ve handled CVE-2024-49747 in production — separate from our analysis above.

No notes yet

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What this is

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.

What belongs here
  • 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