CVE-2023-20605

Local information disclosure via unchecked buffer read

Published Feb 6, 2023 · Updated Mar 26, 2025

Out-of-bounds read in MediaTek keyinstall on affected Android 11.0, 12.0, and 13.0 chipsets allows local users to read information from memory. The keyinstall component reads beyond an intended memory-buffer boundary because it omits a required bounds check on input. Exploitation requires System execution privileges and no user interaction; the publicly available details do not identify the exposed data.

CVSS severity4.4
Medium
EPSS probability0.10%
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 keyinstall on affected Android 11.0, 12.0, and 13.0 chipsets allows local users to read information from memory. The keyinstall component reads beyond an intended memory-buffer boundary because it omits a required bounds check on input. Exploitation requires System execution privileges and no user interaction; the publicly available details do not identify the exposed data.

The record

CVE
CVE-2023-20605
Published
Feb 6, 2023
Updated
Mar 26, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-20, CWE-119
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Feb 6, 2023CVE publishedPublication date reported by the CVE source.
  2. Mar 26, 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 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.

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-20Improper Input Validation
CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer

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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