# CVE-2018-20114: Command injection in n/a

> Unauthenticated attackers can execute arbitrary OS commands on D-Link routers via the soap.cgi service, requiring a firmware update.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/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:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 2 Jan 2019
- **Updated:** 5 Aug 2024
- **Also known as:** GHSA-xjxf-w237-rjjp

## What is CVE-2018-20114?

CVE-2018-20114 is a critical command injection vulnerability in n/a, published on 2 Jan 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

On D-Link DIR-818LW Rev.A 2.05.B03 and DIR-860L Rev.B 2.03.B03 devices, unauthenticated remote OS command execution can occur in the soap.cgi service of the cgibin binary via an "&&" substring in the service parameter.  NOTE: this issue exists because of an incomplete fix for CVE-2018-6530.

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

## Which versions are affected by CVE-2018-20114?

It affects 2 products.


Products: Dlink Dir-818lw Firmware, Dlink Dir-860l Firmware.

## How do I fix CVE-2018-20114?

No fix has been published for CVE-2018-20114 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-20114 being exploited?

There is no known exploitation of CVE-2018-20114 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2019-13481](https://insights.sbomify.com/CVE-2019-13481/): Command injection in n/a (high 8.8)
- [CVE-2019-13482](https://insights.sbomify.com/CVE-2019-13482/): Command injection in n/a (high 8.8)
- [CVE-2019-12786](https://insights.sbomify.com/CVE-2019-12786/): Command injection in n/a (high 8.8)
- [CVE-2019-12787](https://insights.sbomify.com/CVE-2019-12787/): Command injection in n/a (high 8.8)
- [CVE-2025-9003](https://insights.sbomify.com/CVE-2025-9003/): D-Link DIR-818LW DHCP Reserved Address bsc_lan.php cross site scripting (medium 5.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-20114 and fix it if it is affected.

What it is: CVE-2018-20114 is a critical command injection vulnerability in n/a, published on 2 Jan 2019. 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-2018-20114 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-2018-20114/ (Markdown: https://insights.sbomify.com/CVE-2018-20114/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-20114
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-20114
- OSV: https://osv.dev/vulnerability/CVE-2018-20114

---
From sbomify Insights: https://insights.sbomify.com/CVE-2018-20114/
Summaries are generated and may contain mistakes; the official description above is the record.