CVE-2022-46320Network attack vector

Memory overwrite via kernel out-of-bounds read

Published Dec 20, 2022 · Updated Apr 16, 2025

Out-of-bounds read in the kernel module of Huawei HarmonyOS and EMUI allows remote attackers to overwrite memory via unspecified vectors. Huawei has not disclosed the kernel component, entry point, or incorrect bounds operation that reads beyond the intended buffer. The published assessment requires no authentication or user interaction; only memory overwrite is documented, with no stated code-execution outcome.

CVSS severity9.8
Critical
EPSS probability0.49%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Out-of-bounds read in the kernel module of Huawei HarmonyOS and EMUI allows remote attackers to overwrite memory via unspecified vectors. Huawei has not disclosed the kernel component, entry point, or incorrect bounds operation that reads beyond the intended buffer. The published assessment requires no authentication or user interaction; only memory overwrite is documented, with no stated code-execution outcome.

The record

CVE
CVE-2022-46320
Published
Dec 20, 2022
Updated
Apr 16, 2025
Vendor
Huawei Technologies Co., Ltd.
Product
HarmonyOS
Classifications
CWE-125
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 20, 2022CVE publishedPublication date reported by the CVE source.
  2. Apr 16, 2025Record 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
  2. Affected versionversion=2.1
  3. Affected versionversion=3.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Huawei Technologies Co., Ltd. · HarmonyOSversion=2.0; version=2.1; version=3.0.0
MindSpore · EMUIversion=11.0.1; version=12.0.0; version=12.0.1

Published CVSS scores

9.8CISA-ADPCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-125Out-of-bounds Read

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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