How severe is CVE-2021-40023?

CVE-2021-40023 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-40023 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-40023?

CVE-2021-40023 affects Huawei Emui. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-40023?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

When was CVE-2021-40023 published?

CVE-2021-40023 was published on 2022-09-16 and last updated on 2026-06-17.

CVE-2021-40023

CVE-2021-40023 is a high-severity vulnerability in Huawei Emui with a CVSS 3.x base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 0% (35th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Huawei Emui
Published: 2022-09-16
Last modified: 2026-06-17

Description

Configuration defects in the secure OS module. Successful exploitation of this vulnerability will affect confidentiality.

Frequently asked questions

What is CVE-2021-40023?: Configuration defects in the secure OS module. Successful exploitation of this vulnerability will affect confidentiality.
How severe is CVE-2021-40023?: CVE-2021-40023 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-40023 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (35th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-40023?: CVE-2021-40023 affects Huawei Emui. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-40023?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2021-40023 published?: CVE-2021-40023 was published on 2022-09-16 and last updated on 2026-06-17.

References

https://consumer.huawei.com/en/support/bulletin/2022/9/

Affected products (1)

cpe:2.3:o:huawei:emui:12.0.0:*:*:*:*:*:*:*

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