CVE-2022-20354

Local VPN disablement via network callback logic

Published Aug 9, 2022 · Updated Aug 3, 2024

Elevation of privilege in Android 11, Android 12, and Android 12L allows local users to disable a VPN through a network transition. The onDefaultNetworkChanged method in Vpn.java fails to clear the VPN interface before resetting IKE state, so interface removal disconnects the VPN. Exploitation requires local access but no additional privileges or user interaction; disabling the VPN can expose traffic outside the protected tunnel.

CVSS severity7.8
High
EPSS probability0.11%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Elevation of privilege in Android 11, Android 12, and Android 12L allows local users to disable a VPN through a network transition. The onDefaultNetworkChanged method in Vpn.java fails to clear the VPN interface before resetting IKE state, so interface removal disconnects the VPN. Exploitation requires local access but no additional privileges or user interaction; disabling the VPN can expose traffic outside the protected tunnel.

The record

CVE
CVE-2022-20354
Published
Aug 9, 2022
Updated
Aug 3, 2024
Vendor
Google Cloud
Product
Android
Classifications
T1562.004
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Aug 9, 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-11 Android-12 Android-12L

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

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

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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1562.004Impair Defenses: Disable or Modify System Firewall

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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