# CVE-2020-14104: Race condition in Xiaomi router AX3600

> A race condition in the XQBACKUP decompression process on Xiaomi AX3600 routers can lead to path errors, potentially affecting system stability or integrity.

- **Severity:** High 8.1 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/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:** 8 Apr 2021
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-26rw-chjx-9xgj

## What is CVE-2020-14104?

CVE-2020-14104 is a high-severity vulnerability in Xiaomi router AX3600, published on 8 Apr 2021. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A RACE CONDITION on XQBACKUP causes a decompression path error on Xiaomi router AX3600 with ROM version =1.0.50.

Weakness: CWE-362 (Concurrent Execution using Shared Resource with Improper Synchronization)

## Which versions are affected by CVE-2020-14104?

It affects 1 product.


Products: Mi Ax3600 Firmware.

## How do I fix CVE-2020-14104?

No fix has been published for CVE-2020-14104 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-14104 being exploited?

There is no known exploitation of CVE-2020-14104 in the wild and no public exploit code.

## Other vulnerabilities in Xiaomi router AX3600

- [CVE-2020-14115](https://insights.sbomify.com/CVE-2020-14115/): Command injection in Xiaomi Router AX3600 (critical 9.8)
- [CVE-2020-14124](https://insights.sbomify.com/CVE-2020-14124/): Memory corruption in Xiaomi Router AX3600 (critical 9.8)
- [CVE-2020-14111](https://insights.sbomify.com/CVE-2020-14111/): Command injection in Xiaomi Router Router AX3600 (high 7.8)
- [CVE-2020-14110](https://insights.sbomify.com/CVE-2020-14110/): Missing authorization in miwifi6 AX3600 (high 7.8)
- [CVE-2020-14109](https://insights.sbomify.com/CVE-2020-14109/): Command injection in Xiaomi Router AX3600 (high 7.2)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-14104 and fix it if it is affected.

What it is: CVE-2020-14104 is a high-severity vulnerability in Xiaomi router AX3600, published on 8 Apr 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-2020-14104 in the wild and no public exploit code.

Affected product: Xiaomi router AX3600. 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-2020-14104/ (Markdown: https://insights.sbomify.com/CVE-2020-14104/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-14104
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-14104
- OSV: https://osv.dev/vulnerability/CVE-2020-14104

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From sbomify Insights: https://insights.sbomify.com/CVE-2020-14104/
Summaries are generated and may contain mistakes; the official description above is the record.