CVE-2021-22373Network attack vector

Service integrity and availability impact via logic bypass

Published Jun 30, 2021 · Updated Aug 3, 2024

Logic bypass in Huawei smartphones with EMUI 10.1.1 or 11.0.0 or Magic UI 3.1.1 or 4.0.0 allows remote attackers to affect services. Huawei has not published the affected component or explained which operation incorrectly bypasses application logic. Network access without authentication or user interaction is sufficient; the public record limits the consequence to service integrity and availability.

CVSS severity9.1
Critical
EPSS probability0.68%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Logic bypass in Huawei smartphones with EMUI 10.1.1 or 11.0.0 or Magic UI 3.1.1 or 4.0.0 allows remote attackers to affect services. Huawei has not published the affected component or explained which operation incorrectly bypasses application logic. Network access without authentication or user interaction is sufficient; the public record limits the consequence to service integrity and availability.

The record

CVE
CVE-2021-22373
Published
Jun 30, 2021
Updated
Aug 3, 2024
Vendor
Unknown vendor
Product
Unknown product
Classifications
Unavailable
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 30, 2021CVE 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

Compare your product and version with the public record. A matching version still requires validation against your environment.

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

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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