How severe is CVE-2021-39994?

CVE-2021-39994 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2021-39994 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-39994?

CVE-2021-39994 affects Huawei Emui. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-39994?

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

When was CVE-2021-39994 published?

CVE-2021-39994 was published on 2022-02-09 and last updated on 2026-06-17.

CVE-2021-39994

CVE-2021-39994 is a critical-severity vulnerability in Huawei Emui with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 1% (54th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Huawei Emui
Published: 2022-02-09
Last modified: 2026-06-17

Description

There is an arbitrary address access vulnerability with the product line test code.Successful exploitation of this vulnerability may affect service confidentiality, integrity, and availability.

Frequently asked questions

What is CVE-2021-39994?: There is an arbitrary address access vulnerability with the product line test code.Successful exploitation of this vulnerability may affect service confidentiality, integrity, and availability.
How severe is CVE-2021-39994?: CVE-2021-39994 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2021-39994 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (54th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-39994?: CVE-2021-39994 affects Huawei Emui. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-39994?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2021-39994 published?: CVE-2021-39994 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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