# CVE-2026-7067: D-Link DIR-822 udhcpd DHCP Service dhcpd.c system command injection

> Remote attackers can execute arbitrary system commands on unsupported D-Link DIR-822 routers via a flaw in the udhcpd DHCP service.

- **Severity:** Medium 6.9 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 26 Apr 2026
- **Updated:** 27 Apr 2026
- **Also known as:** GHSA-5qjf-gvp4-pqxh

## What is CVE-2026-7067?

CVE-2026-7067 is a medium-severity command injection vulnerability in D-Link DIR-822, published on 26 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability was determined in D-Link DIR-822 A_101. The impacted element is the function system of the file /udhcpcd/dhcpd.c of the component udhcpd DHCP Service. This manipulation of the argument Hostname causes command injection. The attack can be initiated remotely. The exploit has been publicly disclosed and may be utilized. This vulnerability only affects products that are no longer supported by the maintainer.

Weakness: CWE-77 (Improper Neutralization of Special Elements used in a Command), CWE-74 (Improper Neutralization of Special Elements in Output Used by a Downstream Component)

## Which versions are affected by CVE-2026-7067?

It affects 1 product.


Products: Dlink Dir-822 Firmware.

## How do I fix CVE-2026-7067?

No fix has been published for CVE-2026-7067 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-7067 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-7067 exists.

## Other vulnerabilities in D-Link DIR-822

- [CVE-2023-51984](https://insights.sbomify.com/CVE-2023-51984/): Command injection in n/a (critical 9.8)
- [CVE-2023-51987](https://insights.sbomify.com/CVE-2023-51987/): Auth bypass in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-7067 and fix it if it is affected.

What it is: CVE-2026-7067 is a medium-severity command injection vulnerability in D-Link DIR-822, published on 26 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-7067 exists.

Affected product: D-Link DIR-822. 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-2026-7067/ (Markdown: https://insights.sbomify.com/CVE-2026-7067/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-7067
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-7067
- OSV: https://osv.dev/vulnerability/CVE-2026-7067

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-7067/
Summaries are generated and may contain mistakes; the official description above is the record.