How severe is CVE-2021-37039?

CVE-2021-37039 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.

Is CVE-2021-37039 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-37039?

CVE-2021-37039 primarily affects Huawei Harmonyos. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-37039?

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

When was CVE-2021-37039 published?

CVE-2021-37039 was published on 2021-12-08 and last updated on 2026-06-17.

CVE-2021-37039

CVE-2021-37039 is a medium-severity vulnerability in Huawei Harmonyos with a CVSS 3.x base score of 6.5. 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-20.

Key facts

Severity: Medium (CVSS 3.x base score 6.5)
CVSS v2: 3.3
EPSS exploit prediction: 0% (18th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-20
Affected product: Huawei Harmonyos
Published: 2021-12-08
Last modified: 2026-06-17

Description

There is an Input verification vulnerability in Huawei Smartphone.Successful exploitation of this vulnerability may cause Bluetooth DoS.

Frequently asked questions

What is CVE-2021-37039?: There is an Input verification vulnerability in Huawei Smartphone.Successful exploitation of this vulnerability may cause Bluetooth DoS.
How severe is CVE-2021-37039?: CVE-2021-37039 has a CVSS 3.x base score of 6.5, rated medium severity. It is exploitable over an adjacent network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is none, integrity none, and availability high.
Is CVE-2021-37039 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (18th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-37039?: CVE-2021-37039 primarily affects Huawei Harmonyos. In total, 5 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-37039?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2021-37039 published?: CVE-2021-37039 was published on 2021-12-08 and last updated on 2026-06-17.

References

Affected products (5)

cpe:2.3:o:huawei:harmonyos:*:*:*:*:*:*:*:*
cpe:2.3:o:huawei:emui:10.1.1:*:*:*:*:*:*:*
cpe:2.3:o:huawei:emui:11.0.0:*:*:*:*:*:*:*
cpe:2.3:o:huawei:magic_ui:3.1.1:*:*:*:*:*:*:*
cpe:2.3:o:huawei:magic_ui:4.0.0:*:*:*:*:*:*:*

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