CVE-2021-0649

Local privilege escalation via VPN profile reset

Published Dec 15, 2021 · Updated Aug 3, 2024

Elevation of privilege in Android 11 allows local users to reset a VPN profile and gain CONTROL_ALWAYS_ON_VPN through a permissions bypass. The stopVpnProfile method fails to enforce that the caller is the currently prepared VPN package before it invokes prepareInternal with the legacy VPN configuration, allowing an unauthorized profile reset. Exploitation requires a local app with low privileges and no user interaction; the resulting control can affect VPN configuration and system confidentiality, integrity, and availability.

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

Elevation of privilege in Android 11 allows local users to reset a VPN profile and gain CONTROL_ALWAYS_ON_VPN through a permissions bypass. The stopVpnProfile method fails to enforce that the caller is the currently prepared VPN package before it invokes prepareInternal with the legacy VPN configuration, allowing an unauthorized profile reset. Exploitation requires a local app with low privileges and no user interaction; the resulting control can affect VPN configuration and system confidentiality, integrity, and availability.

The record

CVE
CVE-2021-0649
Published
Dec 15, 2021
Updated
Aug 3, 2024
Vendor
Google Cloud
Product
Android
Classifications
CWE-863, T1068
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. Dec 15, 2021CVE 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?

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  1. Affected versionversion=Android-11

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Google Cloud · Androidversion=Android-11

Published CVSS scores

7.2NVDAV:L/AC:L/Au:N/C:C/I:C/A:C
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

CWE-863Incorrect Authorization
T1068Exploitation for Privilege Escalation

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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