# CVE-2019-6832: Auth bypass in Wiser for KNX

> Attackers can bypass authentication in Schneider Electric spaceLYnk and Wiser for KNX devices, leading to loss of control over the system.

- **Severity:** High 8.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 17 Sep 2019
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-754f-pvcx-m72f

## What is CVE-2019-6832?

CVE-2019-6832 is a high-severity authentication bypass vulnerability in Schneider Electric SE Wiser for KNX, published on 17 Sep 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

A CWE-287: Authentication vulnerability exists in spaceLYnk (all versions before 2.4.0) and Wiser for KNX (all versions before 2.4.0 - formerly known as homeLYnk), which could cause loss of control when an attacker bypasses the authentication.

Weakness: CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2019-6832?

It affects 2 products.


Products: Schneider-Electric Spacelynk Firmware, Schneider-Electric Wiser for Knx Firmware.

## How do I fix CVE-2019-6832?

No fix has been published for CVE-2019-6832 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-6832 being exploited?

There is no known exploitation of CVE-2019-6832 in the wild and no public exploit code.

## Other vulnerabilities in Schneider Electric SE Wiser for KNX

- [CVE-2020-7525](https://insights.sbomify.com/CVE-2020-7525/): Auth bypass in All hardware versions of spaceLYnk and Wiser for KNX (formerly homeLYnk) (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-6832 and fix it if it is affected.

What it is: CVE-2019-6832 is a high-severity authentication bypass vulnerability in Schneider Electric SE Wiser for KNX, published on 17 Sep 2019. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2019-6832 in the wild and no public exploit code.

Affected product: Schneider Electric SE Wiser for KNX. 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-2019-6832/ (Markdown: https://insights.sbomify.com/CVE-2019-6832/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-6832
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-6832
- OSV: https://osv.dev/vulnerability/CVE-2019-6832

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From sbomify Insights: https://insights.sbomify.com/CVE-2019-6832/
Summaries are generated and may contain mistakes; the official description above is the record.