CVE-2023-32891

Local privilege escalation via unvalidated Bluetooth input

Published Jan 2, 2024 · Updated Jun 18, 2025

Out-of-bounds write in MediaTek Bluetooth service on Android 12.0 and 13.0 allows local users with System privileges to escalate. The service improperly validates input before writing beyond a memory buffer, permitting memory corruption in the Bluetooth service. Exploitation is local and requires existing System execution privileges but no user interaction; MediaTek has not disclosed the specific input path or resulting privilege boundary.

CVSS severity6.7
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 write in MediaTek Bluetooth service on Android 12.0 and 13.0 allows local users with System privileges to escalate. The service improperly validates input before writing beyond a memory buffer, permitting memory corruption in the Bluetooth service. Exploitation is local and requires existing System execution privileges but no user interaction; MediaTek has not disclosed the specific input path or resulting privilege boundary.

The record

CVE
CVE-2023-32891
Published
Jan 2, 2024
Updated
Jun 18, 2025
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-787, CWE-20, T1404
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Jan 2, 2024CVE publishedPublication date reported by the CVE source.
  2. Jun 18, 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

6.7NVDCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
6.7CISA-ADPCVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

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-787Out-of-bounds Write
CWE-20Improper Input Validation
T1404Exploitation for Privilege Escalation

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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