CVE-2021-0333

Local privilege escalation via obscured Bluetooth permission dialog

Published Feb 10, 2021 · Updated Aug 3, 2024

Tapjacking in Android 8.1 through 11 allows local users to gain phonebook access by obscuring a Bluetooth permission dialog. BluetoothPermissionActivity.onCreate permits non-system overlay windows to cover the phonebook permission prompt instead of hiding them. Exploitation requires a malicious app with user execution privileges, an active Bluetooth connection request, and user interaction with the obscured prompt.

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

What happened

Tapjacking in Android 8.1 through 11 allows local users to gain phonebook access by obscuring a Bluetooth permission dialog. BluetoothPermissionActivity.onCreate permits non-system overlay windows to cover the phonebook permission prompt instead of hiding them. Exploitation requires a malicious app with user execution privileges, an active Bluetooth connection request, and user interaction with the obscured prompt.

The record

CVE
CVE-2021-0333
Published
Feb 10, 2021
Updated
Aug 3, 2024
Vendor
Google Cloud
Product
Android
Classifications
T1626
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Feb 10, 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-8.1 Android-9 Android-10 Android-11

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Google Cloud · Androidversion=Android-8.1 Android-9 Android-10 Android-11

Published CVSS scores

No CVSS assessment is available in this record.

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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1626Abuse Elevation Control Mechanism

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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