CVE-2021-40012Network attack vector

Unauthenticated information disclosure via video-framework pointer misuse

Published Jul 11, 2022 · Updated Aug 4, 2024

Incorrect pointer use in Huawei HarmonyOS 2.0 and EMUI 11.0.0 and 12.0.0 allows remote attackers to disclose data over a network. The video framework incorrectly uses pointers while transmitting data, but Huawei has not disclosed the affected function or pointer operation. No privileges or user interaction are required; the documented consequence is confidentiality loss, with no reported data-write or service impact.

CVSS severity7.5
High
EPSS probability0.83%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Incorrect pointer use in Huawei HarmonyOS 2.0 and EMUI 11.0.0 and 12.0.0 allows remote attackers to disclose data over a network. The video framework incorrectly uses pointers while transmitting data, but Huawei has not disclosed the affected function or pointer operation. No privileges or user interaction are required; the documented consequence is confidentiality loss, with no reported data-write or service impact.

The record

CVE
CVE-2021-40012
Published
Jul 11, 2022
Updated
Aug 4, 2024
Vendor
Huawei Technologies Co., Ltd.
Product
HarmonyOS
Classifications
CWE-668
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 11, 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?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Huawei Technologies Co., Ltd. · HarmonyOSversion=2.0
MindSpore · EMUIversion=11.0.0; version=12.0.0

Published CVSS scores

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

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-668Exposure of Resource to Wrong Sphere

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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