CVE-2021-37017

Kernel crash via improper input validation

Published Nov 23, 2021 · Updated Aug 4, 2024

Improper input validation in Huawei HarmonyOS 2.0 allows attackers to crash the kernel via crafted input on affected devices. Huawei has not published the kernel component, malformed parameter, or exact input-processing operation responsible for the failure. Successful exploitation results in a kernel crash, while the required delivery path and attacker privileges remain undisclosed in the public advisory.

CVSS severityUnavailable
Unscored
EPSS probability0.69%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in Huawei HarmonyOS 2.0 allows attackers to crash the kernel via crafted input on affected devices. Huawei has not published the kernel component, malformed parameter, or exact input-processing operation responsible for the failure. Successful exploitation results in a kernel crash, while the required delivery path and attacker privileges remain undisclosed in the public advisory.

The record

CVE
CVE-2021-37017
Published
Nov 23, 2021
Updated
Aug 4, 2024
Vendor
Huawei Technologies Co., Ltd.
Product
HarmonyOS
Classifications
CWE-20, T1499
Attack vector
Unavailable
Privileges
Unavailable

Timeline

How it unfolded

  1. Nov 23, 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=2.0

What conditions does exploitation require?

Attack vectorUnavailable in this record.
Required privilegesUnavailable in this record.

What is affected?

Huawei Technologies Co., Ltd. · HarmonyOSversion=2.0

Published CVSS scores

No CVSS assessment is available in this record.

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)
VectorUnavailable
PrivilegesUnavailable
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-20Improper Input Validation
T1499Endpoint Denial of Service

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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