CVE-2011-2343

Contact disclosure via unrestricted AT phonebook transfer

Published Feb 12, 2020 · Updated Aug 6, 2024

Information disclosure in Android 2.3 before 2.3.6 allows physically proximate attackers to read contacts via Bluetooth AT commands. BluetoothHeadsetService.java accepts AT phonebook-transfer requests and returns contact records without adequately restricting the requesting Bluetooth peer. Bluetooth range and an active device Bluetooth stack are required; the consequence is limited to unauthorized contact-data disclosure.

CVSS severity4.3
Medium
EPSS probability0.16%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Information disclosure in Android 2.3 before 2.3.6 allows physically proximate attackers to read contacts via Bluetooth AT commands. BluetoothHeadsetService.java accepts AT phonebook-transfer requests and returns contact records without adequately restricting the requesting Bluetooth peer. Bluetooth range and an active device Bluetooth stack are required; the consequence is limited to unauthorized contact-data disclosure.

The record

CVE
CVE-2011-2343
Published
Feb 12, 2020
Updated
Aug 6, 2024
Vendor
Google
Product
Android
Classifications
CWE-200
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 12, 2020CVE publishedPublication date reported by the CVE source.
  2. Aug 6, 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=2.3

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Google · Androidversion=2.3

Published CVSS scores

4.3NIST NVDAV:N/AC:M/Au:N/C:P/I:N/A:N

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.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-200Exposure of Sensitive Information to an Unauthorized Actor

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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