# CVE-2019-12786: Command injection in n/a

> Attackers can execute arbitrary commands on D-Link DIR-818LW routers via XML injection in the HNAP1 SetWanSettings interface.

- **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:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 10 Jun 2019
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-m236-m26p-5cqr

## What is CVE-2019-12786?

CVE-2019-12786 is a high-severity command injection vulnerability in n/a, published on 10 Jun 2019. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

An issue was discovered on D-Link DIR-818LW devices from 2.05.B03 to 2.06B01 BETA. There is a command injection in HNAP1 SetWanSettings via an XML injection of the value of the IPAddress key.

Weakness: CWE-77 (Improper Neutralization of Special Elements used in a Command)

## Which versions are affected by CVE-2019-12786?

It affects 1 product.


Products: Dlink Dir-818lw Firmware.

## How do I fix CVE-2019-12786?

No fix has been published for CVE-2019-12786 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-12786 being exploited?

There is no known exploitation of CVE-2019-12786 in the wild and no public exploit code.

## Other vulnerabilities in n/a

- [CVE-2018-20114](https://insights.sbomify.com/CVE-2018-20114/): Command injection in n/a (critical 9.8)
- [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-2019-12787](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-2019-12786 and fix it if it is affected.

What it is: CVE-2019-12786 is a high-severity command injection vulnerability in n/a, published on 10 Jun 2019. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2019-12786 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-2019-12786/ (Markdown: https://insights.sbomify.com/CVE-2019-12786/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-12786
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-12786
- OSV: https://osv.dev/vulnerability/CVE-2019-12786

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-12786/
Summaries are generated and may contain mistakes; the official description above is the record.