CVE-2024-20033

System-privileged disclosure via unchecked nvram read

Published Mar 4, 2024 · Updated Nov 1, 2024

Out-of-bounds read in MediaTek nvram on affected chipsets running Android 12.0, 13.0, and 14.0 allows local users to disclose memory. The nvram component reads beyond its intended boundary because it fails to perform a bounds check before accessing data. Exploitation requires System execution privileges and no user interaction, and the documented impact is limited to local information disclosure.

CVSS severity4.4
Medium
EPSS probability0.09%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in MediaTek nvram on affected chipsets running Android 12.0, 13.0, and 14.0 allows local users to disclose memory. The nvram component reads beyond its intended boundary because it fails to perform a bounds check before accessing data. Exploitation requires System execution privileges and no user interaction, and the documented impact is limited to local information disclosure.

The record

CVE
CVE-2024-20033
Published
Mar 4, 2024
Updated
Nov 1, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, CWE-125, T1005
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Mar 4, 2024CVE publishedPublication date reported by the CVE source.
  2. Nov 1, 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

4.4CISA-ADPCVSS: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-787Out-of-bounds Write
CWE-125Out-of-bounds Read
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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