How severe is CVE-2020-9140?

CVE-2020-9140 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-2020-9140 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2020-9140?

CVE-2020-9140 primarily affects Huawei Emui. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2020-9140?

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-2020-9140 published?

CVE-2020-9140 was published on 2021-01-13 and last updated on 2026-06-17.

CVE-2020-9140

CVE-2020-9140 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. The underlying weakness is classified as CWE-119.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
CVSS v2: 7.5
EPSS exploit prediction: 1% (67th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Huawei Emui
Published: 2021-01-13
Last modified: 2026-06-17

Description

There is a vulnerability with buffer access with incorrect length value in some Huawei Smartphone.Unauthorized users may trigger code execution when a buffer overflow occurs.

Frequently asked questions

What is CVE-2020-9140?: There is a vulnerability with buffer access with incorrect length value in some Huawei Smartphone.Unauthorized users may trigger code execution when a buffer overflow occurs.
How severe is CVE-2020-9140?: CVE-2020-9140 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-2020-9140 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2020-9140?: CVE-2020-9140 primarily affects Huawei Emui. In total, 11 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2020-9140?: 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-2020-9140 published?: CVE-2020-9140 was published on 2021-01-13 and last updated on 2026-06-17.

References

https://consumer.huawei.com/en/support/bulletin/2020/12/

Affected products (11)

cpe:2.3:o:huawei:emui:9.1.0:*:*:*:*:*:*:*
cpe:2.3:o:huawei:emui:9.1.1:*:*:*:*:*:*:*
cpe:2.3:o:huawei:emui:10.0.0:*:*:*:*:*:*:*
cpe:2.3:o:huawei:emui:10.1.0:*:*:*:*:*:*:*
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:2.1.1:*:*:*:*:*:*:*
cpe:2.3:o:huawei:magic_ui:3.0.0:*:*:*:*:*:*:*
cpe:2.3:o:huawei:magic_ui:3.1.0:*:*:*:*:*:*:*
cpe:2.3:o:huawei:magic_ui:3.1.1:*:*:*:*:*:*:*
cpe:2.3:o:huawei:magic_ui:4.0.0:*:*:*:*:*:*:*

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