# CVE-2017-16923: Command injection in n/a

> Remote unauthenticated attackers can execute arbitrary OS commands on Tenda routers via a crafted GET request to the USB eject endpoint.

- **Severity:** High 8.8 (`CVSS:3.0/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **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:** 21 Nov 2017
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-wp7f-x92c-rf9x

## What is CVE-2017-16923?

CVE-2017-16923 is a high-severity command injection vulnerability in Tenda Ac15 Firmware, published on 21 Nov 2017. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Command Injection vulnerability in app_data_center on Shenzhen Tenda Ac9 US_AC9V1.0BR_V15.03.05.14_multi_TD01, Ac9 ac9_kf_V15.03.05.19(6318_)_cn, Ac15 US_AC15V1.0BR_V15.03.05.18_multi_TD01, Ac15 US_AC15V1.0BR_V15.03.05.19_multi_TD01, Ac18 US_AC18V1.0BR_V15.03.05.05_multi_TD01, and Ac18 ac18_kf_V15.03.05.19(6318_)_cn devices allows remote unauthenticated attackers to execute arbitrary OS commands via a crafted cgi-bin/luci/usbeject?dev_name= GET request from the LAN. This occurs because the "sub_A6E8 usbeject_process_entry" function executes a system function with untrusted input.

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

## Which versions are affected by CVE-2017-16923?

It affects 3 products.


Products: Tenda Ac15 Firmware, Tenda Ac18 Firmware, Tenda Ac9 Firmware.

## How do I fix CVE-2017-16923?

No fix has been published for CVE-2017-16923 yet. Limit exposure of the affected software until one is available.

## Is CVE-2017-16923 being exploited?

There is no known exploitation of CVE-2017-16923 in the wild and no public exploit code.

## Other vulnerabilities in Tenda Ac15 Firmware

- [CVE-2020-10987](https://insights.sbomify.com/CVE-2020-10987/): Tenda AC1900 Router AC15 Model Remote Code Execution (critical 9.8, exploited in the wild)
- [CVE-2026-24103](https://insights.sbomify.com/CVE-2026-24103/): Memory corruption in n/a (critical 9.8)
- [CVE-2026-24101](https://insights.sbomify.com/CVE-2026-24101/): Command injection in n/a (critical 9.8)
- [CVE-2026-24105](https://insights.sbomify.com/CVE-2026-24105/): Command injection in n/a (critical 9.8)
- [CVE-2025-63666](https://insights.sbomify.com/CVE-2025-63666/): Information disclosure in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2017-16923 and fix it if it is affected.

What it is: CVE-2017-16923 is a high-severity command injection vulnerability in Tenda Ac15 Firmware, published on 21 Nov 2017. 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-2017-16923 in the wild and no public exploit code.

Affected product: Tenda Ac15 Firmware. 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-2017-16923/ (Markdown: https://insights.sbomify.com/CVE-2017-16923/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2017-16923
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2017-16923
- OSV: https://osv.dev/vulnerability/CVE-2017-16923

---
From sbomify Insights: https://insights.sbomify.com/CVE-2017-16923/
Summaries are generated and may contain mistakes; the official description above is the record.