CVE-2021-22403Network attack vector

UI forgery via unverified provider hijacking

Published Oct 28, 2021 · Updated Aug 3, 2024

Provider hijacking in Huawei EMUI 9.1.0, 9.1.1, 10.0.0, 10.1.0, 10.1.1, and 11.0.0 allows attackers to forge device UIs. EMUI accepts an unverified provider in an undisclosed component, letting a malicious provider control trusted-looking interface content. The forged interface must induce a user to execute malicious commands; Huawei has not published the provider-selection locus or input path.

CVSS severity9.8
Critical
EPSS probability0.92%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Provider hijacking in Huawei EMUI 9.1.0, 9.1.1, 10.0.0, 10.1.0, 10.1.1, and 11.0.0 allows attackers to forge device UIs. EMUI accepts an unverified provider in an undisclosed component, letting a malicious provider control trusted-looking interface content. The forged interface must induce a user to execute malicious commands; Huawei has not published the provider-selection locus or input path.

The record

CVE
CVE-2021-22403
Published
Oct 28, 2021
Updated
Aug 3, 2024
Vendor
MindSpore
Product
EMUI
Classifications
T1036
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=10.0.0
  2. Affected versionversion=10.1.0
  3. Affected versionversion=10.1.1
  4. Affected versionversion=11.0.0
  5. Affected versionversion=9.1.0
  6. Affected versionversion=9.1.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

MindSpore · EMUIversion=10.0.0; version=10.1.0; version=10.1.1; version=11.0.0; version=9.1.0; version=9.1.1

Published CVSS scores

10.0NIST NVDAV:N/AC:L/Au:N/C:C/I:C/A:C
9.8NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

T1036Masquerading

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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