# CVE-2019-9726: Path traversal in n/a

> Unauthenticated remote attackers can read arbitrary files from the device filesystem via directory traversal in the web interface.

- **Severity:** High 7.5 (`CVSS:3.0/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:** 13 May 2019
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-978r-92pj-2f4j

## What is CVE-2019-9726?

CVE-2019-9726 is a high-severity path traversal vulnerability in n/a, published on 13 May 2019. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Directory Traversal / Arbitrary File Read in eQ-3 AG Homematic CCU3 3.43.15 and earlier allows remote attackers to read arbitrary files of the device's filesystem. This vulnerability can be exploited by unauthenticated attackers with access to the web interface.

Weakness: CWE-22 (Improper Limitation of a Pathname to a Restricted Directory)

## Which versions are affected by CVE-2019-9726?

It affects 1 product.


Products: Eq-3 Ccu3 Firmware.

## How do I fix CVE-2019-9726?

No fix has been published for CVE-2019-9726 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-9726 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2019-9726 exists.

Public exploit code:

- Homematic CCU3 - Local File Inclusion (nuclei): http/cves/2019/CVE-2019-9726.yaml

## Other vulnerabilities in n/a

- [CVE-2020-12834](https://insights.sbomify.com/CVE-2020-12834/): Auth bypass in n/a (critical 9.8)
- [CVE-2019-14474](https://insights.sbomify.com/CVE-2019-14474/): Denial of service in n/a (high 7.5)
- [CVE-2019-9727](https://insights.sbomify.com/CVE-2019-9727/): Information disclosure in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-9726 and fix it if it is affected.

What it is: CVE-2019-9726 is a high-severity path traversal vulnerability in n/a, published on 13 May 2019. 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-2019-9726 exists.

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-2019-9726/ (Markdown: https://insights.sbomify.com/CVE-2019-9726/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-9726
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-9726
- OSV: https://osv.dev/vulnerability/CVE-2019-9726

---
From sbomify Insights: https://insights.sbomify.com/CVE-2019-9726/
Summaries are generated and may contain mistakes; the official description above is the record.