CVE-2022-21769

Local information disclosure via unchecked CCCI bounds

Published Jul 6, 2022 · Updated Aug 3, 2024

Information disclosure in MediaTek CCCI on Android 10.0 through 12.0 allows local users with System privileges to read memory via a missing bounds check. The CCCI driver performs an out-of-bounds read when processing an input whose length is not validated against the buffer. Exploitation requires local System-level execution privileges and no user interaction; impact is limited to disclosure of memory contents.

CVSS severity4.4
Medium
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

Information disclosure in MediaTek CCCI on Android 10.0 through 12.0 allows local users with System privileges to read memory via a missing bounds check. The CCCI driver performs an out-of-bounds read when processing an input whose length is not validated against the buffer. Exploitation requires local System-level execution privileges and no user interaction; impact is limited to disclosure of memory contents.

The record

CVE
CVE-2022-21769
Published
Jul 6, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-125
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jul 6, 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 privilegesadmin

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

2.1NVDAV:L/AC:L/Au:N/C:P/I:N/A:N
4.4NVDCVSS:3.1/AV:L/AC:L/PR:H/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.

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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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read

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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