CVE-2023-40080

Local privilege escalation via unchecked Bluetooth indices

Published Dec 4, 2023 · Updated Aug 2, 2024

Out-of-bounds writes in Android 13 and 14 Bluetooth code allow local users to escalate privileges without user interaction. Several btm_ble_gap.cc paths use MAX_SYNC_TRANSACTION as an array index when allocation or lookup returns that sentinel, writing beyond periodic-sync arrays. A local user needs no additional execution privileges or user interaction, and successful exploitation grants higher privileges on the device.

CVSS severity7.8
High
EPSS probability0.13%
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 writes in Android 13 and 14 Bluetooth code allow local users to escalate privileges without user interaction. Several btm_ble_gap.cc paths use MAX_SYNC_TRANSACTION as an array index when allocation or lookup returns that sentinel, writing beyond periodic-sync arrays. A local user needs no additional execution privileges or user interaction, and successful exploitation grants higher privileges on the device.

The record

CVE
CVE-2023-40080
Published
Dec 4, 2023
Updated
Aug 2, 2024
Vendor
Google
Product
Android
Classifications
CWE-787, T1068
Attack vector
local
Privileges
Unavailable

Timeline

How it unfolded

  1. Dec 4, 2023CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=13
  2. Affected versionversion=14

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

Google · Androidversion=13; version=14

Published CVSS scores

7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/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
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1068Exploitation 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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