CVE-2021-22479

Kernel crash via invalid address access

Published Feb 25, 2022 · Updated Aug 3, 2024

Invalid address access in a HarmonyOS 2.0 module interface allows local users to crash the kernel through unspecified input. Huawei has not disclosed the affected module or interface, the invalid address operation, or how attacker-controlled input reaches it. Local low-privileged access is required, and successful exploitation interrupts the entire device by crashing its kernel.

CVSS severity5.5
Medium
EPSS probability0.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Invalid address access in a HarmonyOS 2.0 module interface allows local users to crash the kernel through unspecified input. Huawei has not disclosed the affected module or interface, the invalid address operation, or how attacker-controlled input reaches it. Local low-privileged access is required, and successful exploitation interrupts the entire device by crashing its kernel.

The record

CVE
CVE-2021-22479
Published
Feb 25, 2022
Updated
Aug 3, 2024
Vendor
Huawei Technologies Co., Ltd.
Product
HarmonyOS
Classifications
CWE-119, T1529
Attack vector
local
Privileges
authenticated

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 vectorlocal
Required privilegesauthenticated

What is affected?

Huawei Technologies Co., Ltd. · HarmonyOSversion=2.0

Published CVSS scores

4.9NIST NVDAV:L/AC:L/Au:N/C:N/I:N/A:C
5.5NIST NVDCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/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
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-119Improper Restriction of Operations within the Bounds of a Memory Buffer
T1529System Shutdown/Reboot

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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