CVE-2021-40043

Voice-command execution via laser interference

Published Feb 25, 2022 · Updated Aug 4, 2024

Laser command injection in Huawei Sound X before 9.0.3.4(H100SP13C00) allows physically proximate attackers to execute voice commands. Huawei has not disclosed the affected component or validation failure beyond stating that the device fails to reject malicious external interference. Exploitation requires visual line of sight to the speaker, and the documented consequence is execution of voice commands on the device.

CVSS severity8.1
High
EPSS probability0.39%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Laser command injection in Huawei Sound X before 9.0.3.4(H100SP13C00) allows physically proximate attackers to execute voice commands. Huawei has not disclosed the affected component or validation failure beyond stating that the device fails to reject malicious external interference. Exploitation requires visual line of sight to the speaker, and the documented consequence is execution of voice commands on the device.

The record

CVE
CVE-2021-40043
Published
Feb 25, 2022
Updated
Aug 4, 2024
Vendor
Huawei Technologies Co., Ltd.
Product
HUAWEI Sound X
Classifications
CWE-77
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 25, 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=versions earlier than AIS-BW80H-00 9.0.3.4(H100SP13C00)

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

Huawei Technologies Co., Ltd. · HUAWEI Sound Xversion=versions earlier than AIS-BW80H-00 9.0.3.4(H100SP13C00)

Published CVSS scores

7.5HuaweiCVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:H/E:F/RL:O/RC:C
7.8NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
4.6NIST NVDAV:L/AC:L/Au:N/C:P/I:P/A:P
8.1HuaweiCVSS:3.0/AV:L/AC:H/PR:N/UI:N/S:C/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)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-77Improper Neutralization of Special Elements used in a Command ('Command Injection')

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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