CVE-2021-0676

Local information disclosure via out-of-bounds driver read

Published Dec 17, 2021 · Updated Aug 3, 2024

An out-of-bounds read in the MediaTek geniezone driver on Android 8.1, 9.0, 10.0, and 11.0 allows local users to disclose information. The driver applies an incorrect bounds check and reads beyond a buffer boundary, exposing adjacent memory. Exploitation requires System execution privileges, needs no user interaction, and has no reported ability to modify data or interrupt service.

CVSS severity4.4
Medium
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

An out-of-bounds read in the MediaTek geniezone driver on Android 8.1, 9.0, 10.0, and 11.0 allows local users to disclose information. The driver applies an incorrect bounds check and reads beyond a buffer boundary, exposing adjacent memory. Exploitation requires System execution privileges, needs no user interaction, and has no reported ability to modify data or interrupt service.

The record

CVE
CVE-2021-0676
Published
Dec 17, 2021
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-125, CWE-200, T1005
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Dec 17, 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?

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

2.1NIST National Vulnerability DatabaseAV:L/AC:L/Au:N/C:P/I:N/A:N
4.4NIST National Vulnerability DatabaseCVSS: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.

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
Privilegesadmin
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read
CWE-200Exposure of Sensitive Information to an Unauthorized Actor
T1005Data from Local System

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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