CVE-2022-20129Public exploit

Phone-account selection denial via unlimited registrations

Published Jun 15, 2022 · Updated Aug 3, 2024

Improper input validation in Android 10 through 12L allows local users to block selection of a phone account through repeated registrations. PhoneAccountRegistrar.registerPhoneAccount accepted an unbounded number of PhoneAccount registrations from one package instead of enforcing a per-package limit. A local application needs no additional execution privileges or user interaction, and the effect is limited to phone-account selection availability.

CVSS severity5.5
Medium
EPSS probability0.10%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in Android 10 through 12L allows local users to block selection of a phone account through repeated registrations. PhoneAccountRegistrar.registerPhoneAccount accepted an unbounded number of PhoneAccount registrations from one package instead of enforcing a per-package limit. A local application needs no additional execution privileges or user interaction, and the effect is limited to phone-account selection availability.

The record

CVE
CVE-2022-20129
Published
Jun 15, 2022
Updated
Aug 3, 2024
Vendor
Google Cloud
Product
Android
Classifications
CWE-20, T1642
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Jun 15, 2022CVE 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-12L

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

Published CVSS scores

4.9NIST National Vulnerability DatabaseAV:L/AC:L/Au:N/C:N/I:N/A:C
5.5NIST National Vulnerability DatabaseCVSS: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

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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-20Improper Input Validation
T1642Endpoint Denial of Service

Public exploit references

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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