CVE-2021-22469

Kernel information disclosure via out-of-bounds read

Published Oct 28, 2021 · Updated Aug 3, 2024

Out-of-bounds read in HarmonyOS 2.0 allows local users to disclose kernel memory or crash the kernel through a local component. Huawei has not identified the affected component or published how it calculates or validates the kernel-memory read boundary. Low-privileged local access is required; successful exploitation exposes kernel memory or interrupts service by crashing the kernel.

CVSS severity7.1
High
EPSS probability0.16%
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 HarmonyOS 2.0 allows local users to disclose kernel memory or crash the kernel through a local component. Huawei has not identified the affected component or published how it calculates or validates the kernel-memory read boundary. Low-privileged local access is required; successful exploitation exposes kernel memory or interrupts service by crashing the kernel.

The record

CVE
CVE-2021-22469
Published
Oct 28, 2021
Updated
Aug 3, 2024
Vendor
Huawei Technologies Co., Ltd.
Product
HarmonyOS
Classifications
CWE-125
Attack vector
local
Privileges
Unavailable

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=2.0

What conditions does exploitation require?

Attack vectorlocal
Required privilegesUnavailable in this record.

What is affected?

Huawei Technologies Co., Ltd. · HarmonyOSversion=2.0

Published CVSS scores

3.6NIST NVDAV:L/AC:L/Au:N/C:P/I:N/A:P
7.1NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/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)
Vectorlocal
PrivilegesUnavailable
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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