CVE-2022-20097

Local information disclosure via aee daemon race

Published May 3, 2022 · Updated Aug 3, 2024

A TOCTOU race in the MediaTek aee daemon on affected chipsets running Android 11.0 or 12.0 allows local users to disclose information. The daemon checks a resource and later uses it after an intervening state change, but MediaTek has not disclosed the affected resource or operation. The race requires no additional execution privileges or user interaction, and the documented consequence is limited to information disclosure.

CVSS severity4.7
Medium
EPSS probability0.08%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

A TOCTOU race in the MediaTek aee daemon on affected chipsets running Android 11.0 or 12.0 allows local users to disclose information. The daemon checks a resource and later uses it after an intervening state change, but MediaTek has not disclosed the affected resource or operation. The race requires no additional execution privileges or user interaction, and the documented consequence is limited to information disclosure.

The record

CVE
CVE-2022-20097
Published
May 3, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-362, CWE-367
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. May 3, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

1.9NVDAV:L/AC:M/Au:N/C:P/I:N/A:N
4.7NVDCVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:N/A:N

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.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

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-362Concurrent Execution using Shared Resource with Improper Synchronization
CWE-367Time-of-check Time-of-use (TOCTOU) Race Condition

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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