CVE-2022-20218

Privilege escalation via split-permission auto-grant

Published Jul 13, 2022 · Updated Aug 3, 2024

Privilege escalation in Android 12 and Android 12L PermissionController allows local users to retain permissions through a crafted app request. GrantPermissionsViewModel counts granted group permissions even when REVOKE_WHEN_REQUESTED marks them for exclusion, triggering an incorrect split-permission auto-grant. Exploitation requires user interaction with the permission request, after which the requesting app keeps permissions without the user's consent.

CVSS severity7.8
High
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

Privilege escalation in Android 12 and Android 12L PermissionController allows local users to retain permissions through a crafted app request. GrantPermissionsViewModel counts granted group permissions even when REVOKE_WHEN_REQUESTED marks them for exclusion, triggering an incorrect split-permission auto-grant. Exploitation requires user interaction with the permission request, after which the requesting app keeps permissions without the user's consent.

The record

CVE
CVE-2022-20218
Published
Jul 13, 2022
Updated
Aug 3, 2024
Vendor
Google Cloud
Product
Android
Classifications
CWE-732, T1626
Attack vector
local
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 13, 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-12 Android-12L

What conditions does exploitation require?

Attack vectorlocal
Required privilegesunauthenticated

What is affected?

Google Cloud · Androidversion=Android-12 Android-12L

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
4.4NIST NVDAV:L/AC:M/Au:N/C:P/I:P/A:P

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
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-732Incorrect Permission Assignment for Critical Resource
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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