CVE-2022-20140Network attack vector

Remote privilege escalation via GATT length miscalculation

Published Jun 15, 2022 · Updated Aug 3, 2024

Out-of-bounds write in Android 12 and Android 12L Bluetooth GATT allows remote attackers to escalate privileges via a crafted response. The read_multi_rsp path fails to reserve the two-byte length field when bounding variable-length data copied into a response packet. A proximate Bluetooth peer can trigger memory corruption without authentication or user interaction, enabling privilege escalation on the device.

CVSS severity9.8
Critical
EPSS probability8.69%
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 Android 12 and Android 12L Bluetooth GATT allows remote attackers to escalate privileges via a crafted response. The read_multi_rsp path fails to reserve the two-byte length field when bounding variable-length data copied into a response packet. A proximate Bluetooth peer can trigger memory corruption without authentication or user interaction, enabling privilege escalation on the device.

The record

CVE
CVE-2022-20140
Published
Jun 15, 2022
Updated
Aug 3, 2024
Vendor
Google Cloud
Product
Android
Classifications
CWE-787, T1203
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 15, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 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=Android-12 Android-12L

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

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

Published CVSS scores

9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
10.0NIST NVDAV:N/AC:L/Au:N/C:C/I:C/A:C

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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-787Out-of-bounds Write
T1203Exploitation for Client Execution

Public exploit references

No public exploit references are available in this record.

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Technologies

Your stack

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Your stack

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