CVE-2021-22402Network attack vector

Unauthenticated service interruption via undisclosed mechanism

Published Oct 28, 2021 · Updated Aug 3, 2024

Denial of service in Huawei EMUI 11.0.0 allows remote attackers to interrupt service via an unspecified network vector. Huawei has not published the affected component, trigger, or incorrect operation that processes untrusted input. No privileges or user interaction are required, but the disclosed consequence is limited to availability and does not distinguish a hang, crash, or reboot.

CVSS severity7.5
High
EPSS probability0.72%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Denial of service in Huawei EMUI 11.0.0 allows remote attackers to interrupt service via an unspecified network vector. Huawei has not published the affected component, trigger, or incorrect operation that processes untrusted input. No privileges or user interaction are required, but the disclosed consequence is limited to availability and does not distinguish a hang, crash, or reboot.

The record

CVE
CVE-2021-22402
Published
Oct 28, 2021
Updated
Aug 3, 2024
Vendor
MindSpore
Product
EMUI
Classifications
T1499
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Oct 28, 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

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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=11.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

MindSpore · EMUIversion=11.0.0

Published CVSS scores

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

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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

T1499Endpoint Denial of Service

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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