# CVE-2019-6853: Cross-site scripting in Andover Continuum models 9680, 5740 and 5720, bCX4040, bCX9640, 9900, 9940, 9924 and 9702

> Cross-site scripting vulnerability in Andover Continuum web server allows attackers to execute arbitrary scripts in user browsers.

- **Severity:** Medium 6.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N`)
- **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:** 20 Nov 2019
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-pc4q-2v2h-h23c

## What is CVE-2019-6853?

CVE-2019-6853 is a medium-severity cross-site scripting vulnerability in Schneider Electric Andover Continuum models 9680, 5740 and 5720, bCX4040, bCX9640, 9900, 9940, 9924 and 9702, published on 20 Nov 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-79: Failure to Preserve Web Page Structure vulnerability exists in Andover Continuum (models 9680, 5740 and 5720, bCX4040, bCX9640, 9900, 9940, 9924 and 9702) , which could enable a successful Cross-site Scripting (XSS attack) when using the products web server.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2019-6853?

It affects 11 products.


Products: Schneider-Electric Andover Continuum 5720 Firmware, Schneider-Electric Andover Continuum 5740 Firmware, Schneider-Electric Andover Continuum 9200 Firmware, Schneider-Electric Andover Continuum 9680 Firmware, Schneider-Electric Andover Continuum 9702 Firmware, Schneider-Electric Andover Continuum 9900 Firmware, Schneider-Electric Andover Continuum 9924 Firmware, Schneider-Electric Andover Continuum 9940 Firmware, Schneider-Electric Andover Continuum 9941 Firmware, Schneider-Electric Andover Continuum Bcx4040 Firmware, Schneider-Electric Andover Continuum Bcx9640 Firmware.

## How do I fix CVE-2019-6853?

No fix has been published for CVE-2019-6853 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-6853 being exploited?

There is no known exploitation of CVE-2019-6853 in the wild and no public exploit code.

## Other vulnerabilities in Schneider Electric Andover Continuum models 9680, 5740 and 5720, bCX4040, bCX9640, 9900, 9940, 9924 and 9702

- [CVE-2020-7480](https://insights.sbomify.com/CVE-2020-7480/): Code injection in Andover Continuum (All versions) (critical 9.8)
- [CVE-2020-7481](https://insights.sbomify.com/CVE-2020-7481/): Cross-site scripting in Andover Continuum (All versions) (medium 6.1)
- [CVE-2020-7482](https://insights.sbomify.com/CVE-2020-7482/): Cross-site scripting in Andover Continuum (All versions) (medium 6.1)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-6853 and fix it if it is affected.

What it is: CVE-2019-6853 is a medium-severity cross-site scripting vulnerability in Schneider Electric Andover Continuum models 9680, 5740 and 5720, bCX4040, bCX9640, 9900, 9940, 9924 and 9702, published on 20 Nov 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-2019-6853 in the wild and no public exploit code.

Affected product: Schneider Electric Andover Continuum models 9680, 5740 and 5720, bCX4040, bCX9640, 9900, 9940, 9924 and 9702. 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-2019-6853/ (Markdown: https://insights.sbomify.com/CVE-2019-6853/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-6853
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-6853
- OSV: https://osv.dev/vulnerability/CVE-2019-6853

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From sbomify Insights: https://insights.sbomify.com/CVE-2019-6853/
Summaries are generated and may contain mistakes; the official description above is the record.