CVE-2021-0931

Local information disclosure via unfiltered Bluetooth aliases

Published Dec 15, 2021 · Updated Aug 3, 2024

Information disclosure in Android 9 through 12 allows local users to access protected data through a misleading permission dialog. BluetoothDevice.getAlias returns a remote-device alias without filtering display formatting before permission-dialog code presents it. Exploitation requires user execution privileges and interaction with the deceptive prompt; the reported consequence is local data disclosure.

CVSS severity5.5
Medium
EPSS probability0.14%
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 9 through 12 allows local users to access protected data through a misleading permission dialog. BluetoothDevice.getAlias returns a remote-device alias without filtering display formatting before permission-dialog code presents it. Exploitation requires user execution privileges and interaction with the deceptive prompt; the reported consequence is local data disclosure.

The record

CVE
CVE-2021-0931
Published
Dec 15, 2021
Updated
Aug 3, 2024
Vendor
Google Cloud
Product
Android
Classifications
T1036
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 15, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Android-10 Android-11 Android-12 Android-9

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Google Cloud · Androidversion=Android-10 Android-11 Android-12 Android-9

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
4.7NIST NVDAV:L/AC:M/Au:N/C:C/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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1036Masquerading

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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