CVE-2020-9142

9.1 CRITICAL 0.7% exploit odds Fix listed Memory safety Device

What it is

There is a heap base buffer overflow vulnerability in some Huawei smartphone.Successful exploitation of this vulnerability can cause heap overflow and memory overwriting when the system incorrectly processes the update file.

At a glance

Exploitability: Can be exploited over the network without logging in. High risk of data tampering, service disruption.
Exploit odds: 0.7% chance of exploitation in the next 30 days (EPSS).
Fix: A patch, advisory or fixed version is referenced. Upgrade or apply it.

Timeline

2021-01-13 22:15 UTC PublishedDisclosed publicly on CVE.org and NVD
2026-06-17 03:27 UTC Last updatedMost recent change to the record

Why it ranks here

Exploited in the wild: no, CISA does not list it.
Exploit odds: 0.7% in the next 30 days (EPSS).
Severity: 9.1 CRITICAL (CVSS).
Fix: a patch or advisory is linked.

Details

Published: 2021-01-13 22:15 UTC
Last modified: 2026-06-17 03:27 UTC
Exploit probability: 0.7% · EPSS, next 30 days
Weakness: CWE-787 · Out-of-bounds write
Record status: Modified

Affected

Huawei Emui 9.1.0
Huawei Emui 9.1.1
Huawei Emui 10.0.0
Huawei Emui 10.1.0
Huawei Emui 10.1.1
Huawei Emui 11.0.0
Huawei Magic Ui 2.1.1
Huawei Magic Ui 3.0.0

Attack profile CVSS 3.1 · 9.1

Attack vector: Network
Complexity: Low
Privileges needed: None
User interaction: None
Scope: Unchanged
Confidentiality: None
Integrity: High
Availability: High

Raw vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Is it in your code?

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Fix and advisories

References

NVD record · CVE.org record