CVE-2023-20836

Local information disclosure via unchecked camsys read

Published Sep 4, 2023 · Updated Oct 8, 2024

An out-of-bounds read in MediaTek camsys on 14 chipsets with Android 11.0, 12.0, or 13.0 allows local users to disclose data. Camsys performs a memory read without first checking that the read stays within bounds; MediaTek has not disclosed the function or input path. Exploitation requires System execution privileges but no user interaction, and the consequence 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

An out-of-bounds read in MediaTek camsys on 14 chipsets with Android 11.0, 12.0, or 13.0 allows local users to disclose data. Camsys performs a memory read without first checking that the read stays within bounds; MediaTek has not disclosed the function or input path. Exploitation requires System execution privileges but no user interaction, and the consequence is limited to local information disclosure.

The record

CVE
CVE-2023-20836
Published
Sep 4, 2023
Updated
Oct 8, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-125
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Sep 4, 2023CVE publishedPublication date reported by the CVE source.
  2. Oct 8, 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

4.4NIST NVDCVSS: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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