# CVE-2018-12692: Command injection in n/a

> Remote authenticated attackers can execute arbitrary commands on TP-Link Wi-Fi Range Extenders via shell metacharacters in the WPS setup parameter.

- **Severity:** High 8.8 (`CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 23 Jun 2018
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-2jc5-4g6p-2928

## What is CVE-2018-12692?

CVE-2018-12692 is a high-severity command injection vulnerability in n/a, published on 23 Jun 2018. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

TP-Link TL-WA850RE Wi-Fi Range Extender with hardware version 5 allows remote authenticated users to execute arbitrary commands via shell metacharacters in the wps_setup_pin parameter to /data/wps.setup.json.

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

## Which versions are affected by CVE-2018-12692?

It affects 1 product.


Products: Tp-Link Tl-Wa850re Firmware.

## How do I fix CVE-2018-12692?

No fix has been published for CVE-2018-12692 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-12692 being exploited?

There is no known exploitation of CVE-2018-12692 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2022-22922](https://insights.sbomify.com/CVE-2022-22922/): Weak cryptography in n/a (critical 9.8)
- [CVE-2018-12694](https://insights.sbomify.com/CVE-2018-12694/): Denial of service in n/a (high 7.5)
- [CVE-2025-14737](https://insights.sbomify.com/CVE-2025-14737/): Command Injection Vulnerability in TP-Link WA850RE (high 7.1)
- [CVE-2018-12693](https://insights.sbomify.com/CVE-2018-12693/): Memory corruption in n/a (medium 6.5)
- [CVE-2025-14738](https://insights.sbomify.com/CVE-2025-14738/): Configuration Disclosure Vulnerability in TP-Link WA850RE (medium 5.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-12692 and fix it if it is affected.

What it is: CVE-2018-12692 is a high-severity command injection vulnerability in n/a, published on 23 Jun 2018. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2018-12692 in the wild and no public exploit code.

Affected product: n/a. 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-2018-12692/ (Markdown: https://insights.sbomify.com/CVE-2018-12692/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-12692
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-12692
- OSV: https://osv.dev/vulnerability/CVE-2018-12692

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-12692/
Summaries are generated and may contain mistakes; the official description above is the record.