CVE-2021-40016

Data disclosure via improper Bluetooth permissions

Published Jul 11, 2022 · Updated Aug 4, 2024

Improper permission control in EMUI's Bluetooth module allows physically proximate attackers to disclose confidential data over Bluetooth. Huawei has not published the permission-checking locus or the Bluetooth operation that incorrectly accepts unauthorized access. The issue is reachable without authentication from Bluetooth range in EMUI 10.1.0, 10.1.1, 11.0.0, and 12.0.0, and the reported consequence is confidentiality loss only.

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

Improper permission control in EMUI's Bluetooth module allows physically proximate attackers to disclose confidential data over Bluetooth. Huawei has not published the permission-checking locus or the Bluetooth operation that incorrectly accepts unauthorized access. The issue is reachable without authentication from Bluetooth range in EMUI 10.1.0, 10.1.1, 11.0.0, and 12.0.0, and the reported consequence is confidentiality loss only.

The record

CVE
CVE-2021-40016
Published
Jul 11, 2022
Updated
Aug 4, 2024
Vendor
MindSpore
Product
EMUI
Classifications
Unavailable
Attack vector
adjacent
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 11, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 4, 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=10.1.0
  2. Affected versionversion=10.1.1
  3. Affected versionversion=11.0.0
  4. Affected versionversion=12.0.0

What conditions does exploitation require?

Attack vectoradjacent
Required privilegesunauthenticated

What is affected?

MindSpore · EMUIversion=10.1.0; version=10.1.1; version=11.0.0; version=12.0.0

Published CVSS scores

3.3NIST NVDAV:A/AC:L/Au:N/C:P/I:N/A:N
6.5NIST NVDCVSS:3.1/AV:A/AC:L/PR:N/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)
Vectoradjacent
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

No sourced classifications are available.

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

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Your stack

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