CVE-2023-20705

Local information disclosure via missing APU bounds check

Published May 15, 2023 · Updated Jan 24, 2025

Out-of-bounds read in the MediaTek APU on affected chipsets running Android 12.0 or 13.0 allows local users to disclose information. The APU accepts a quantity without the required bounds check and reads beyond the intended buffer; MediaTek has not disclosed the specific function or input path. Exploitation requires low-privileged local access, needs no user interaction, and affects confidentiality without reported integrity or availability impact.

CVSS severity5.5
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 the MediaTek APU on affected chipsets running Android 12.0 or 13.0 allows local users to disclose information. The APU accepts a quantity without the required bounds check and reads beyond the intended buffer; MediaTek has not disclosed the specific function or input path. Exploitation requires low-privileged local access, needs no user interaction, and affects confidentiality without reported integrity or availability impact.

The record

CVE
CVE-2023-20705
Published
May 15, 2023
Updated
Jan 24, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-1284, CWE-20
Attack vector
local
Privileges
authenticated

Timeline

How it unfolded

  1. May 15, 2023CVE publishedPublication date reported by the CVE source.
  2. Jan 24, 2025Record 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 privilegesauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

5.5CISA-ADPCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
5.5NIST NVDCVSS:3.1/AV:L/AC:L/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-1284Improper Validation of Specified Quantity in Input
CWE-20Improper Input Validation

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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