CVE-2022-20022Public exploit

Bluetooth link disconnection via duplicate host address

Published Jan 4, 2022 · Updated Aug 3, 2024

Denial of service in MediaTek Bluetooth on Android 10.0 and 11.0 allows physically proximate attackers to disconnect an active link. The controller accepts a connection attempt that reuses the BD address of the currently connected host and incorrectly drops the established Bluetooth link. Exploitation requires Bluetooth radio proximity and custom Link Manager Protocol traffic, but no privileges or user interaction; the bounded impact is interruption of the active connection.

CVSS severity6.5
Medium
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in MediaTek Bluetooth on Android 10.0 and 11.0 allows physically proximate attackers to disconnect an active link. The controller accepts a connection attempt that reuses the BD address of the currently connected host and incorrectly drops the established Bluetooth link. Exploitation requires Bluetooth radio proximity and custom Link Manager Protocol traffic, but no privileges or user interaction; the bounded impact is interruption of the active connection.

The record

CVE
CVE-2022-20022
Published
Jan 4, 2022
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-440, T1499.004
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jan 4, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

3.3NIST NVDAV:A/AC:L/Au:N/C:N/I:N/A:P
6.5NIST NVDCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/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 exploitPublished

Weakness, pattern, technique

CWE-440Expected Behavior Violation
T1499.004Application or System Exploitation

Public exploit references

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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