CVE-2022-20443

Local privilege escalation via pass-through overlay touches

Published Jun 28, 2023 · Updated Dec 4, 2024

Privilege escalation in Android 13 allows local users to bypass interaction requirements through a crafted tapjacking overlay. SurfaceFlinger's Layer::hasInputInfo excludes window handles marked NO_INPUT_CHANNEL, causing InputDispatcher to treat container surfaces as invisible and pass touches to an underlying activity. A low-privileged local app can exploit the overlay without further user interaction to obtain elevated privileges on the device.

CVSS severity7.8
High
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

Privilege escalation in Android 13 allows local users to bypass interaction requirements through a crafted tapjacking overlay. SurfaceFlinger's Layer::hasInputInfo excludes window handles marked NO_INPUT_CHANNEL, causing InputDispatcher to treat container surfaces as invisible and pass touches to an underlying activity. A low-privileged local app can exploit the overlay without further user interaction to obtain elevated privileges on the device.

The record

CVE
CVE-2022-20443
Published
Jun 28, 2023
Updated
Dec 4, 2024
Vendor
Google Cloud
Product
Android
Classifications
CWE-1021, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Jun 28, 2023CVE publishedPublication date reported by the CVE source.
  2. Dec 4, 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-13

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Google Cloud · Androidversion=Android-13

Published CVSS scores

7.8NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/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.

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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

CWE-1021Improper Restriction of Rendered UI Layers or Frames
T1068Exploitation for Privilege Escalation

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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