# CVE-2021-37062: Integer overflow in HarmonyOS

> An improper array index validation flaw in Huawei HarmonyOS allows attackers to cause memory overflow and leak sensitive information.

- **Severity:** Critical 9.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 7 Dec 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-hpmh-gxfc-p35h

## What is CVE-2021-37062?

CVE-2021-37062 is a critical vulnerability in Huawei Harmonyos, published on 7 Dec 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

There is a Improper Validation of Array Index vulnerability in Huawei Smartphone.Successful exploitation of this vulnerability may lead to memory overflow and information leakage.

Weakness: CWE-129 (Improper Validation of Array Index)

## Which versions are affected by CVE-2021-37062?

It affects 1 product.


Products: Huawei Harmonyos.

## How do I fix CVE-2021-37062?

No fix has been published for CVE-2021-37062 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-37062 being exploited?

There is no known exploitation of CVE-2021-37062 in the wild and no public exploit code.

## Other vulnerabilities in Huawei Harmonyos

- [CVE-2026-34865](https://insights.sbomify.com/CVE-2026-34865/): Memory corruption in HarmonyOS (critical 10.0)
- [CVE-2023-34157](https://insights.sbomify.com/CVE-2023-34157/): Other in HarmonyOS (critical 10.0)
- [CVE-2023-41294](https://insights.sbomify.com/CVE-2023-41294/): Denial of service in HarmonyOS (critical 9.8)
- [CVE-2022-48478](https://insights.sbomify.com/CVE-2022-48478/): Denial of service in HarmonyOS (critical 9.8)
- [CVE-2022-48479](https://insights.sbomify.com/CVE-2022-48479/): Memory corruption in HarmonyOS (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-37062 and fix it if it is affected.

What it is: CVE-2021-37062 is a critical vulnerability in Huawei Harmonyos, published on 7 Dec 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2021-37062 in the wild and no public exploit code.

Affected product: Huawei Harmonyos. 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-2021-37062/ (Markdown: https://insights.sbomify.com/CVE-2021-37062/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-37062
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-37062
- OSV: https://osv.dev/vulnerability/CVE-2021-37062

---
From sbomify Insights: https://insights.sbomify.com/CVE-2021-37062/
Summaries are generated and may contain mistakes; the official description above is the record.