# CVE-2022-26670: D-Link DIR-878 - Command Injection

> An unauthenticated LAN attacker can execute arbitrary system commands on the D-Link DIR-878 router via inadequate input filtering.

- **Severity:** High 8.8 (`CVSS:3.1/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:** 7 Apr 2022
- **Updated:** 17 Sep 2024
- **Also known as:** GHSA-v45w-c5xw-545j

## What is CVE-2022-26670?

CVE-2022-26670 is a high-severity command injection vulnerability in D-Link DIR-878, published on 7 Apr 2022. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

D-Link DIR-878 has inadequate filtering for special characters in the webpage input field. An unauthenticated LAN attacker can perform command injection attack to execute arbitrary system commands to control the system or disrupt service.

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

## Which versions are affected by CVE-2022-26670?

It affects 1 product.


Products: Dlink Dir-878 Firmware.

## How do I fix CVE-2022-26670?

No fix has been published for CVE-2022-26670 yet. Limit exposure of the affected software until one is available.

## Is CVE-2022-26670 being exploited?

There is no known exploitation of CVE-2022-26670 in the wild and no public exploit code.

## Other vulnerabilities in D-Link DIR-878

- [CVE-2023-27720](https://insights.sbomify.com/CVE-2023-27720/): Memory corruption in n/a (critical 9.8)
- [CVE-2023-24798](https://insights.sbomify.com/CVE-2023-24798/): Memory corruption in n/a (critical 9.8)
- [CVE-2023-24799](https://insights.sbomify.com/CVE-2023-24799/): Memory corruption in n/a (critical 9.8)
- [CVE-2023-24800](https://insights.sbomify.com/CVE-2023-24800/): Memory corruption in n/a (critical 9.8)
- [CVE-2022-44202](https://insights.sbomify.com/CVE-2022-44202/): Memory corruption in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2022-26670 and fix it if it is affected.

What it is: CVE-2022-26670 is a high-severity command injection vulnerability in D-Link DIR-878, published on 7 Apr 2022. 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-2022-26670 in the wild and no public exploit code.

Affected product: D-Link DIR-878. 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-2022-26670/ (Markdown: https://insights.sbomify.com/CVE-2022-26670/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2022-26670
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-26670
- OSV: https://osv.dev/vulnerability/CVE-2022-26670

---
From sbomify Insights: https://insights.sbomify.com/CVE-2022-26670/
Summaries are generated and may contain mistakes; the official description above is the record.