How severe is CVE-2021-37045?

CVE-2021-37045 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-2021-37045 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2021-37045?

CVE-2021-37045 primarily affects Huawei Harmonyos. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2021-37045?

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-2021-37045 published?

CVE-2021-37045 was published on 2021-12-08 and last updated on 2026-06-17.

CVE-2021-37045

CVE-2021-37045 is a critical-severity vulnerability in Huawei Harmonyos 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. The underlying weakness is classified as CWE-416.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 10.0
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-416
Affected product: Huawei Harmonyos
Published: 2021-12-08
Last modified: 2026-06-17

Description

There is an UAF vulnerability in Huawei Smartphone.Successful exploitation of this vulnerability may cause the device to restart unexpectedly and the kernel-mode code to be executed.

Frequently asked questions

What is CVE-2021-37045?: There is an UAF vulnerability in Huawei Smartphone.Successful exploitation of this vulnerability may cause the device to restart unexpectedly and the kernel-mode code to be executed.
How severe is CVE-2021-37045?: CVE-2021-37045 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-2021-37045 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2021-37045?: CVE-2021-37045 primarily affects Huawei Harmonyos. In total, 3 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2021-37045?: 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-2021-37045 published?: CVE-2021-37045 was published on 2021-12-08 and last updated on 2026-06-17.

References

Affected products (3)

cpe:2.3:o:huawei:harmonyos:*:*:*:*:*:*:*:*
cpe:2.3:o:huawei:emui:10.1.0:*:*:*:*:*:*:*
cpe:2.3:o:huawei:magic_ui:3.1.0:*:*:*:*:*:*:*

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