How severe is CVE-2021-40006?

CVE-2021-40006 has a CVSS 3.x base score of 4.6, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2021-40006 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-40006?

CVE-2021-40006 affects Huawei Harmonyos. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2021-40006?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2021-40006 published?

CVE-2021-40006 was published on 2022-01-10 and last updated on 2026-06-17.

CVE-2021-40006

CVE-2021-40006 is a medium-severity vulnerability in Huawei Harmonyos with a CVSS 3.x base score of 4.6. 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-327.

Key facts

Severity: Medium (CVSS 3.x base score 4.6)
CVSS v2: 2.1
EPSS exploit prediction: 0% (4th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-327
Affected product: Huawei Harmonyos
Published: 2022-01-10
Last modified: 2026-06-17

Description

Vulnerability of design defects in the security algorithm component. Successful exploitation of this vulnerability may affect confidentiality.

Frequently asked questions

What is CVE-2021-40006?: Vulnerability of design defects in the security algorithm component. Successful exploitation of this vulnerability may affect confidentiality.
How severe is CVE-2021-40006?: CVE-2021-40006 has a CVSS 3.x base score of 4.6, rated medium severity. It is exploitable over physical access with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2021-40006 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (4th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-40006?: CVE-2021-40006 affects Huawei Harmonyos. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2021-40006?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-40006 published?: CVE-2021-40006 was published on 2022-01-10 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:o:huawei:harmonyos:2.0:*:*:*:*:*:*:*

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