CVE-2021-0922

Local privilege escalation via missing cross-profile check

Published Dec 15, 2021 · Updated Aug 3, 2024

Missing authorization in Android 11 PackageManagerService allows local users to gain cross-profile privileges without user interaction. enforceCrossUserOrProfilePermission omits the INTERACT_ACROSS_PROFILES permission check, allowing a caller to cross a user or profile boundary. A locally installed app is required, and successful exploitation grants permissions across profiles rather than remote access.

CVSS severity7.8
High
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

Missing authorization in Android 11 PackageManagerService allows local users to gain cross-profile privileges without user interaction. enforceCrossUserOrProfilePermission omits the INTERACT_ACROSS_PROFILES permission check, allowing a caller to cross a user or profile boundary. A locally installed app is required, and successful exploitation grants permissions across profiles rather than remote access.

The record

CVE
CVE-2021-0922
Published
Dec 15, 2021
Updated
Aug 3, 2024
Vendor
Google Cloud
Product
Android
Classifications
CWE-862, T1404
Attack vector
local
Privileges
Unavailable

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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=Android-11

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

Google Cloud · Androidversion=Android-11

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.6NIST NVDAV:L/AC:L/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 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 exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1404Exploitation 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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