CVE-2021-22434Network attack vector

Code execution via out-of-bounds memory access

Published Feb 25, 2022 · Updated Aug 3, 2024

Memory safety vulnerability in Huawei HarmonyOS 2.0 allows remote attackers to execute malicious code via a smartphone memory operation. Huawei has not published the affected component or bounds-checking operation, so the malformed input and entry point remain undisclosed. Exploitation requires network reachability described by the CVSS record; the stated consequence is malicious code execution, with no separate availability or confidentiality detail disclosed.

CVSS severity9.8
Critical
EPSS probability0.90%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Memory safety vulnerability in Huawei HarmonyOS 2.0 allows remote attackers to execute malicious code via a smartphone memory operation. Huawei has not published the affected component or bounds-checking operation, so the malformed input and entry point remain undisclosed. Exploitation requires network reachability described by the CVSS record; the stated consequence is malicious code execution, with no separate availability or confidentiality detail disclosed.

The record

CVE
CVE-2021-22434
Published
Feb 25, 2022
Updated
Aug 3, 2024
Vendor
Huawei Technologies Co., Ltd.
Product
HarmonyOS
Classifications
CWE-119
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Feb 25, 2022CVE 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=2.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Huawei Technologies Co., Ltd. · HarmonyOSversion=2.0
MindSpore · EMUIversion=10.1.0; version=10.1.1; version=11.0.0

Published CVSS scores

7.5NISTAV:N/AC:L/Au:N/C:P/I:P/A:P
9.8NISTCVSS: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

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer

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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