CVE-2021-40040 - Vulnerability Details - OpenCVE

Vulnerability of writing data to an arbitrary address in the HW_KEYMASTER module. Successful exploitation of this vulnerability may affect confidentiality.

No CVSS v4.0

Attack Vector Network

Attack Complexity Low

Privileges Required None

Scope Unchanged

Confidentiality Impact High

Integrity Impact None

Availability Impact None

User Interaction None

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

The EPSS score is 0.00162.

Exploitation poc

Automatable no

Technical Impact partial

Vendors	Products
Huawei	Emui Harmonyos Magic Ui

Configuration 1 [-]

OR	cpe:2.3:o:huawei:emui:10.0.0:::::::*
	cpe:2.3:o:huawei:emui:10.1.0:::::::*
	cpe:2.3:o:huawei:emui:10.1.1:::::::*
	cpe:2.3:o:huawei:emui:11.0.0:::::::*
	cpe:2.3:o:huawei:harmonyos:2.0:::::::*
	cpe:2.3:o:huawei:magic_ui:3.0.0:::::::*
	cpe:2.3:o:huawei:magic_ui:3.1.0:::::::*
	cpe:2.3:o:huawei:magic_ui:3.1.1:::::::*
	cpe:2.3:o:huawei:magic_ui:4.0.0:::::::*

No data.

No data.

References

Link	Providers
https://consumer.huawei.com/en/support/bulletin/2022/8/
https://device.harmonyos.com/en/docs/security/update/security-bulletins-phones-202209-0000001392278845

History

Fri, 06 Mar 2026 18:15:00 +0000

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

MITRE

Status: PUBLISHED

Assigner: huawei

Published: 2022-08-09T20:11:21.000Z

Updated: 2026-03-06T17:36:42.392Z

Reserved: 2021-08-23T00:00:00.000Z

Link: CVE-2021-40040

Vulnrichment

Updated: 2024-08-04T02:27:31.529Z

NVD

Status : Modified

Published: 2022-08-10T20:15:22.443

Modified: 2026-03-06T18:16:09.910

Link: CVE-2021-40040

Redhat

No data.

OpenCVE Enrichment

No data.

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