CVE-2021-22406Network attack vector

Unauthenticated app crash via undisclosed remote input

Published Oct 28, 2021 · Updated Aug 3, 2024

Denial of service in the MeeTime app in affected Huawei EMUI releases allows remote attackers to terminate the app over a network. Huawei has not published the crafted input, protocol, or MeeTime code path whose uncaught exception terminates the process. No authentication or user interaction is required, and the reported consequence is limited to the MeeTime app exiting unexpectedly.

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 the MeeTime app in affected Huawei EMUI releases allows remote attackers to terminate the app over a network. Huawei has not published the crafted input, protocol, or MeeTime code path whose uncaught exception terminates the process. No authentication or user interaction is required, and the reported consequence is limited to the MeeTime app exiting unexpectedly.

The record

CVE
CVE-2021-22406
Published
Oct 28, 2021
Updated
Aug 3, 2024
Vendor
MindSpore
Product
EMUI
Classifications
CWE-755, 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=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

7.5NIST National Vulnerability DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
5.0NIST National Vulnerability DatabaseAV: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.

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-755Improper Handling of Exceptional Conditions
T1499Endpoint Denial of Service

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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