CVE-2021-40053Network attack vector

Unauthenticated service interruption and integrity compromise

Published Mar 7, 2022 · Updated Aug 4, 2024

Permission-control failure in the Nearby module of Huawei mobile operating systems allows remote attackers to alter data and interrupt service. Huawei has not published the permission-check locus or the operation that improperly accepts an unauthorized request. Affected releases include specified EMUI, Magic UI, and HarmonyOS versions; network access without authentication is sufficient, and no confidentiality impact is reported.

CVSS severity9.1
Critical
EPSS probability0.71%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Permission-control failure in the Nearby module of Huawei mobile operating systems allows remote attackers to alter data and interrupt service. Huawei has not published the permission-check locus or the operation that improperly accepts an unauthorized request. Affected releases include specified EMUI, Magic UI, and HarmonyOS versions; network access without authentication is sufficient, and no confidentiality impact is reported.

The record

CVE
CVE-2021-40053
Published
Mar 7, 2022
Updated
Aug 4, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
CWE-276
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 7, 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?

Affected buildAffected product and version details are unavailable.

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Affected products and versions are unavailable in this record.

Published CVSS scores

9.1NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
6.4NIST NVDAV:N/AC:L/Au:N/C:N/I:P/A:P

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-276Incorrect Default Permissions

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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