CVE-2023-40083

Local information disclosure via unchecked GAP length

Published Dec 4, 2023 · Updated Aug 2, 2024

Out-of-bounds read in Android 12, 12L, 13, and 14 allows local users to disclose information through crafted Bluetooth GAP data. The Bluetooth stack's parse_gap_data function trusts an input length byte and advances across the buffer without confirming that the declared GAP element fits. A user-executed process can reach the parser without user interaction; the reported consequence is local memory disclosure, with no integrity or availability impact.

CVSS severity5.5
Medium
EPSS probability0.14%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
Coverage for this vulnerability

See if you're affected

Explore vulnerability checks for your environment with Hinoki.

Book a demo

Summary

What happened

Out-of-bounds read in Android 12, 12L, 13, and 14 allows local users to disclose information through crafted Bluetooth GAP data. The Bluetooth stack's parse_gap_data function trusts an input length byte and advances across the buffer without confirming that the declared GAP element fits. A user-executed process can reach the parser without user interaction; the reported consequence is local memory disclosure, with no integrity or availability impact.

The record

CVE
CVE-2023-40083
Published
Dec 4, 2023
Updated
Aug 2, 2024
Vendor
Google
Product
Android
Classifications
CWE-125, T1533
Attack vector
local
Privileges
authenticated

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

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=12
  2. Affected versionversion=12L
  3. Affected versionversion=13
  4. Affected versionversion=14

What conditions does exploitation require?

Attack vectorlocal
Required privilegesauthenticated

What is affected?

Google · Androidversion=12; version=12L; version=13; version=14

Published CVSS scores

5.5NVDCVSS: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 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorlocal
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read
T1533Data from Local System

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

See the directory against your own environment.

Your stack

Check the software in your environment

Book a demo to see how Hinoki identifies affected software and validates exploitability in your environment.

Book a demo