CVE-2021-0549

Local Bluetooth data disclosure via production logging

Published Jun 22, 2021 · Updated Aug 3, 2024

Information disclosure in Android 11 Bluetooth allows local users with System privileges to read Bluetooth MAC addresses from Logcat. BondStateMachine.sspRequestCallback logs Bluetooth pairing data without restricting the output to debug builds. Exploitation requires System execution privileges and no user interaction, exposing pairing information without enabling modification or service interruption.

CVSS severity4.4
Medium
EPSS probability0.12%
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 11 Bluetooth allows local users with System privileges to read Bluetooth MAC addresses from Logcat. BondStateMachine.sspRequestCallback logs Bluetooth pairing data without restricting the output to debug builds. Exploitation requires System execution privileges and no user interaction, exposing pairing information without enabling modification or service interruption.

The record

CVE
CVE-2021-0549
Published
Jun 22, 2021
Updated
Aug 3, 2024
Vendor
Google Cloud
Product
Android
Classifications
CWE-532, T1005
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jun 22, 2021CVE 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?

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  1. Affected versionversion=Android-11

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Google Cloud · Androidversion=Android-11

Published CVSS scores

4.4NIST NVDCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:N/A:N
2.1NIST NVDAV:L/AC:L/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)
Vectorlocal
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-532Insertion of Sensitive Information into Log File
T1005Data from Local System

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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