CVE-2021-0934

Local service interruption via unlimited account creation

Published Dec 13, 2022 · Updated Apr 22, 2025

Resource exhaustion in Google Android 10, 11, 12, 12L, and 13 allows local users to interrupt device service through account creation. AccountManagerService permits an app to repeatedly call addAccountExplicitly without an account limit, causing findAllDeAccounts in AccountsDb.java to enumerate an unbounded account set. Any locally installed app can trigger the condition without additional execution privileges or user interaction, exhausting resources until device services become unavailable.

CVSS severity5.5
Medium
EPSS probability0.09%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Resource exhaustion in Google Android 10, 11, 12, 12L, and 13 allows local users to interrupt device service through account creation. AccountManagerService permits an app to repeatedly call addAccountExplicitly without an account limit, causing findAllDeAccounts in AccountsDb.java to enumerate an unbounded account set. Any locally installed app can trigger the condition without additional execution privileges or user interaction, exhausting resources until device services become unavailable.

The record

CVE
CVE-2021-0934
Published
Dec 13, 2022
Updated
Apr 22, 2025
Vendor
Google Cloud
Product
Android
Classifications
CWE-1284, T1499
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Dec 13, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 22, 2025Record 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-10 Android-11 Android-12 Android-12L Android-13

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

Google Cloud · Androidversion=Android-10 Android-11 Android-12 Android-12L Android-13

Published CVSS scores

5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1284Improper Validation of Specified Quantity in Input
T1499Endpoint Denial of Service

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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