CVE-2023-21380

Local privilege escalation via Bluetooth heap overwrite

Published Oct 30, 2023 · Updated Aug 2, 2024

Heap buffer overflow in Bluetooth on Google Android 14 allows local users with System privileges to escalate privileges without user interaction. The Bluetooth component writes beyond a heap allocation, but Google has not disclosed the affected function, input, or faulty bounds operation. Exploitation requires existing System execution privileges and no user interaction; successful corruption can elevate local code within the device.

CVSS severity6.7
Medium
EPSS probability0.09%
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

Heap buffer overflow in Bluetooth on Google Android 14 allows local users with System privileges to escalate privileges without user interaction. The Bluetooth component writes beyond a heap allocation, but Google has not disclosed the affected function, input, or faulty bounds operation. Exploitation requires existing System execution privileges and no user interaction; successful corruption can elevate local code within the device.

The record

CVE
CVE-2023-21380
Published
Oct 30, 2023
Updated
Aug 2, 2024
Vendor
Google
Product
Android
Classifications
CWE-787, T1068
Attack vector
local
Privileges
admin

Timeline

How it unfolded

  1. Oct 30, 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=14

What conditions does exploitation require?

Attack vectorlocal
Required privilegesadmin

What is affected?

Google · Androidversion=14

Published CVSS scores

6.7NIST National Vulnerability DatabaseCVSS: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
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

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