CVE-2022-20345

Remote code execution via oversized L2CAP channel request

Published Aug 9, 2022 · Updated Oct 20, 2025

Out-of-bounds write in Android 12 and 12L allows remote attackers to execute code by sending a crafted Bluetooth L2CAP request. l2cble_process_sig_cmd accepts a credit-based connection request declaring more than five channels and writes beyond its fixed channel array. Bluetooth proximity is required, but no authentication, additional privileges, or user interaction is needed.

CVSS severity8.8
High
EPSS probability0.46%
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 write in Android 12 and 12L allows remote attackers to execute code by sending a crafted Bluetooth L2CAP request. l2cble_process_sig_cmd accepts a credit-based connection request declaring more than five channels and writes beyond its fixed channel array. Bluetooth proximity is required, but no authentication, additional privileges, or user interaction is needed.

The record

CVE
CVE-2022-20345
Published
Aug 9, 2022
Updated
Oct 20, 2025
Vendor
Google Cloud
Product
Android
Classifications
CWE-77, CWE-787, T1658
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Aug 9, 2022CVE publishedPublication date reported by the CVE source.
  2. Oct 20, 2025Record 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=Android-12 Android-12L

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Google Cloud · Androidversion=Android-12 Android-12L

Published CVSS scores

6.5CISA ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
8.8NIST NVDCVSS:3.1/AV:A/AC:L/PR:N/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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')
CWE-787Out-of-bounds Write
T1658Exploitation for Client Execution

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