# CVE-2020-9081: Auth bypass in HUAWEI Mate 20

> Attackers can bypass app lock on specific Huawei smartphones by performing operations in a specific mode, compromising application security.

- **Severity:** Low 3.5 (`CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 27 Dec 2024
- **Updated:** 27 Dec 2024
- **Also known as:** GHSA-hc6q-5pvq-h8ff

## What is CVE-2020-9081?

CVE-2020-9081 is a low-severity authentication bypass vulnerability in HUAWEI Mate 20, published on 27 Dec 2024. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

There is an improper authorization vulnerability in some Huawei smartphones. An attacker could perform a series of operation in specific mode to exploit this vulnerability. Successful exploit could allow the attacker to bypass app lock. (Vulnerability ID: HWPSIRT-2019-12144)

This vulnerability has been assigned a Common Vulnerabilities and Exposures (CVE) ID: CVE-2020-9081.

Weakness: CWE-863 (Incorrect Authorization), CWE-285 (Improper Authorization)

## Which versions are affected by CVE-2020-9081?

It affects 7 products.


Products: Huawei Mate 20 Firmware, Huawei P30 Firmware, Huawei P30 Pro Firmware, Huawei Princeton-Al10d Firmware, Huawei Yale-Al00a Firmware, Huawei Yale-Al50a Firmware, Huawei Yalep-Al10b Firmware.

## How do I fix CVE-2020-9081?

No fix has been published for CVE-2020-9081 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-9081 being exploited?

There is no known exploitation of CVE-2020-9081 in the wild and no public exploit code.

## Other vulnerabilities in HUAWEI Mate 20

- [CVE-2020-9113](https://insights.sbomify.com/CVE-2020-9113/): Memory corruption in HUAWEI Mate 20 (high 8.0)
- [CVE-2019-5225](https://insights.sbomify.com/CVE-2019-5225/): Memory corruption in P30, Mate 20, P30 Pro (high 7.8)
- [CVE-2020-1796](https://insights.sbomify.com/CVE-2020-1796/): Missing authorization in HUAWEI Mate 20;HUAWEI Mate 30 Pro (medium 6.6)
- [CVE-2020-1787](https://insights.sbomify.com/CVE-2020-1787/): Auth bypass in HUAWEI Mate 20 (medium 6.6)
- [CVE-2020-1840](https://insights.sbomify.com/CVE-2020-1840/): Auth bypass in HUAWEI Mate 20 (medium 6.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-9081 and fix it if it is affected.

What it is: CVE-2020-9081 is a low-severity authentication bypass vulnerability in HUAWEI Mate 20, published on 27 Dec 2024. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-9081 in the wild and no public exploit code.

Affected product: HUAWEI Mate 20. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2020-9081/ (Markdown: https://insights.sbomify.com/CVE-2020-9081/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-9081
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-9081
- OSV: https://osv.dev/vulnerability/CVE-2020-9081

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From sbomify Insights: https://insights.sbomify.com/CVE-2020-9081/
Summaries are generated and may contain mistakes; the official description above is the record.