# CVE-2019-7642: Missing authorization in n/a

> Attackers can remotely access DNS and login logs on D-Link routers with mydlink enabled due to missing authentication on web interfaces.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 25 Mar 2019
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-6388-29mv-4hjx

## What is CVE-2019-7642?

CVE-2019-7642 is a high-severity missing authorization vulnerability in Dlink Dir-816 Firmware, published on 25 Mar 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

D-Link routers with the mydlink feature have some web interfaces without authentication requirements. An attacker can remotely obtain users' DNS query logs and login logs. Vulnerable targets include but are not limited to the latest firmware versions of DIR-817LW (A1-1.04), DIR-816L (B1-2.06), DIR-816 (B1-2.06?), DIR-850L (A1-1.09), and DIR-868L (A1-1.10).

Weakness: CWE-306 (Missing Authentication for Critical Functionality)

## Which versions are affected by CVE-2019-7642?

It affects 5 products.


Products: Dlink Dir-816 Firmware, Dlink Dir-816l Firmware, Dlink Dir-817lw Firmware, Dlink Dir-850l Firmware, Dlink Dir-868l Firmware.

## How do I fix CVE-2019-7642?

No fix has been published for CVE-2019-7642 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-7642 being exploited?

There is no known exploitation of CVE-2019-7642 in the wild and no public exploit code.

Public exploit code:

- https://github.com/xw77cve/CVE-2019-7642 (github_poc): https://github.com/xw77cve/CVE-2019-7642

## Other vulnerabilities in Dlink Dir-816 Firmware

- [CVE-2025-45931](https://insights.sbomify.com/CVE-2025-45931/): Command injection in n/a (critical 9.8)
- [CVE-2024-57684](https://insights.sbomify.com/CVE-2024-57684/): Missing authorization in n/a (critical 9.8)
- [CVE-2023-24331](https://insights.sbomify.com/CVE-2023-24331/): Command injection in n/a (critical 9.8)
- [CVE-2024-24321](https://insights.sbomify.com/CVE-2024-24321/): Command injection in n/a (critical 9.8)
- [CVE-2023-39637](https://insights.sbomify.com/CVE-2023-39637/): Command injection in n/a (critical 9.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-7642 and fix it if it is affected.

What it is: CVE-2019-7642 is a high-severity missing authorization vulnerability in Dlink Dir-816 Firmware, published on 25 Mar 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-2019-7642 in the wild and no public exploit code.

Affected product: Dlink Dir-816 Firmware. 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-2019-7642/ (Markdown: https://insights.sbomify.com/CVE-2019-7642/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-7642
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-7642
- OSV: https://osv.dev/vulnerability/CVE-2019-7642

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-7642/
Summaries are generated and may contain mistakes; the official description above is the record.