CVE-2021-37046Network attack vector

Device restart via codec-detection memory leak

Published Dec 7, 2021 · Updated Aug 4, 2024

Memory leakage in the codec detection module in Huawei EMUI 11.0.0 allows remote attackers to restart a device through memory exhaustion. The module fails to release memory after codec detection, although Huawei has not disclosed the affected allocation path or triggering input. Network access without authentication or user interaction is sufficient, and the bounded consequence is a device restart.

CVSS severity7.5
High
EPSS probability0.67%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory leakage in the codec detection module in Huawei EMUI 11.0.0 allows remote attackers to restart a device through memory exhaustion. The module fails to release memory after codec detection, although Huawei has not disclosed the affected allocation path or triggering input. Network access without authentication or user interaction is sufficient, and the bounded consequence is a device restart.

The record

CVE
CVE-2021-37046
Published
Dec 7, 2021
Updated
Aug 4, 2024
Vendor
MindSpore
Product
EMUI
Classifications
CWE-401, T1499.004
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 7, 2021CVE 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=11.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

MindSpore · EMUIversion=11.0.0

Published CVSS scores

7.8NIST NVDAV:N/AC:L/Au:N/C:N/I:N/A:C
7.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

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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

CWE-401Missing Release of Memory after Effective Lifetime
T1499.004Application or System Exploitation

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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