# CVE-2023-39780: ASUS RT-AX55 Routers OS Command Injection

> Authenticated attackers can execute arbitrary OS commands on ASUS RT-AX55 routers via the qos_bw_rulelist parameter.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Yes, since 2 Jun 2025 (CISA KEV)
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 11 Sep 2023
- **Updated:** 21 Oct 2025
- **Also known as:** GHSA-6m5p-5ccp-c8p3

## What is CVE-2023-39780?

CVE-2023-39780 is a high-severity command injection vulnerability in ASUS RT-AX55, published on 11 Sep 2023. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

On ASUS RT-AX55 3.0.0.4.386.51598 devices, authenticated attackers can perform OS command injection via the /start_apply.htm qos_bw_rulelist parameter. NOTE: for the similar "token-generated module" issue, see CVE-2023-41345; for the similar "token-refresh module" issue, see CVE-2023-41346; for the similar "check token module" issue, see CVE-2023-41347; and for the similar "code-authentication module" issue, see CVE-2023-41348.

Weakness: CWE-78 (Improper Neutralization of Special Elements used in an OS Command)

## Which versions are affected by CVE-2023-39780?

It affects 1 product.


Products: Asus Rt-Ax55 Firmware.

## How do I fix CVE-2023-39780?

No fix has been published for CVE-2023-39780 yet. Limit exposure of the affected software until one is available. US federal agencies must fix it by 23 Jun 2025.

## Is CVE-2023-39780 being exploited?

Yes. Attackers have exploited CVE-2023-39780 in the wild since at least 2 Jun 2025.

## Other vulnerabilities in ASUS RT-AX55

- [CVE-2023-41345](https://insights.sbomify.com/CVE-2023-41345/): ASUS RT-AX55 - command injection - 1 (high 8.8)
- [CVE-2023-41346](https://insights.sbomify.com/CVE-2023-41346/): ASUS RT-AX55 - command injection - 2 (high 8.8)
- [CVE-2023-41347](https://insights.sbomify.com/CVE-2023-41347/): ASUS RT-AX55 - command injection - 3 (high 8.8)
- [CVE-2023-41348](https://insights.sbomify.com/CVE-2023-41348/): ASUS RT-AX55 - command injection - 4 (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-39780 and fix it if it is affected.

What it is: CVE-2023-39780 is a high-severity command injection vulnerability in ASUS RT-AX55, published on 11 Sep 2023. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: Yes. Attackers have exploited CVE-2023-39780 in the wild since at least 2 Jun 2025.

Affected product: ASUS RT-AX55. 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-2023-39780/ (Markdown: https://insights.sbomify.com/CVE-2023-39780/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-39780
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-39780
- OSV: https://osv.dev/vulnerability/CVE-2023-39780

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From sbomify Insights: https://insights.sbomify.com/CVE-2023-39780/
Summaries are generated and may contain mistakes; the official description above is the record.