CVE-2021-46740Network attack vector

Unauthenticated disclosure of device data

Published Apr 11, 2022 · Updated Aug 4, 2024

Improper authentication in Huawei HarmonyOS 2.0 and EMUI 12.0.0 allows remote attackers to read unspecified device data. Huawei discloses only a design defect in the device authentication service and has not published the faulty operation or input path. No authentication or user interaction is required, and the documented consequence is limited to confidentiality.

CVSS severity7.5
High
EPSS probability0.76%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper authentication in Huawei HarmonyOS 2.0 and EMUI 12.0.0 allows remote attackers to read unspecified device data. Huawei discloses only a design defect in the device authentication service and has not published the faulty operation or input path. No authentication or user interaction is required, and the documented consequence is limited to confidentiality.

The record

CVE
CVE-2021-46740
Published
Apr 11, 2022
Updated
Aug 4, 2024
Vendor
MindSpore
Product
HarmonyOS
Classifications
CWE-287
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 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=2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

MindSpore · HarmonyOSversion=2.0
MindSpore · EMUIversion=12.0.0

Published CVSS scores

7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
5.0NIST NVDAV:N/AC:L/Au:N/C:P/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.

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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-287Improper Authentication

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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