How severe is CVE-2021-39992?

CVE-2021-39992 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-39992 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-39992?

CVE-2021-39992 affects Huawei Emui. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-39992?

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-2021-39992 published?

CVE-2021-39992 was published on 2022-02-09 and last updated on 2026-06-17.

CVE-2021-39992

CVE-2021-39992 is a high-severity vulnerability in Huawei Emui with a CVSS 3.x base score of 7.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-732.

Key facts

Severity: High (CVSS 3.x base score 7.8)
CVSS v2: 4.6
EPSS exploit prediction: 0% (6th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-732
Affected product: Huawei Emui
Published: 2022-02-09
Last modified: 2026-06-17

Description

There is an improper security permission configuration vulnerability on ACPU.Successful exploitation of this vulnerability may affect service confidentiality, integrity, and availability.

Frequently asked questions

What is CVE-2021-39992?: There is an improper security permission configuration vulnerability on ACPU.Successful exploitation of this vulnerability may affect service confidentiality, integrity, and availability.
How severe is CVE-2021-39992?: CVE-2021-39992 has a CVSS 3.x base score of 7.8, rated high severity. It is exploitable over local access with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-39992 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (6th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-39992?: CVE-2021-39992 affects Huawei Emui. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-39992?: 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-2021-39992 published?: CVE-2021-39992 was published on 2022-02-09 and last updated on 2026-06-17.

References

https://consumer.huawei.com/en/support/bulletin/2022/2/

Affected products (1)

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

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