# CVE-2019-6528: Cross-site scripting in PSI GridConnect GmbH (formerly known as PSI Nentec GmbH) Telecontrol Gateway and Smart Telecontrol Unit family, IEC104 Security Proxy.

> Cross-site scripting vulnerability in PSI GridConnect Telecontrol Gateway allows attackers to execute arbitrary code via malicious web input.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 5 Mar 2019
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-45cc-q6w5-96r8

## What is CVE-2019-6528?

CVE-2019-6528 is a high-severity cross-site scripting vulnerability in ICS-CERT PSI GridConnect GmbH (formerly known as PSI Nentec GmbH) Telecontrol Gateway and Smart Telecontrol Unit family, IEC104 Security Proxy., published on 5 Mar 2019. Any signed-in user can exploit it over the network, with no action from the victim.

### Official description

PSI GridConnect GmbH Telecontrol Gateway and Smart Telecontrol Unit family, IEC104 Security Proxy versions Telecontrol Gateway 3G Versions 4.2.21, 5.0.27, 5.1.19, 6.0.16 and prior, and Telecontrol Gateway XS-MU Versions 4.2.21, 5.0.27, 5.1.19, 6.0.16 and prior, and Telecontrol Gateway VM Versions 4.2.21, 5.0.27, 5.1.19, 6.0.16 and prior, and Smart Telecontrol Unit TCG Versions 5.0.27, 5.1.19, 6.0.16 and prior, and IEC104 Security Proxy Version 2.2.10 and prior The web application browser interprets input as active HTML, JavaScript, or VBScript, which could allow an attacker to execute arbitrary code.

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

## Which versions are affected by CVE-2019-6528?

It affects 5 products.


Products: Psigridconnect Iec104 Security Proxy Firmware, Psigridconnect Smart Telecontrol Unit Tcg Firmware, Psigridconnect Telecontrol Gateway 3g Firmware, Psigridconnect Telecontrol Gateway Vm Firmware, Psigridconnect Telecontrol Gateway Xs-Mu Firmware.

## How do I fix CVE-2019-6528?

No fix has been published for CVE-2019-6528 yet. Limit exposure of the affected software until one is available.

## Is CVE-2019-6528 being exploited?

There is no known exploitation of CVE-2019-6528 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2019-6528 and fix it if it is affected.

What it is: CVE-2019-6528 is a high-severity cross-site scripting vulnerability in ICS-CERT PSI GridConnect GmbH (formerly known as PSI Nentec GmbH) Telecontrol Gateway and Smart Telecontrol Unit family, IEC104 Security Proxy., published on 5 Mar 2019. Any signed-in user can exploit it over the network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2019-6528 in the wild and no public exploit code.

Affected product: ICS-CERT PSI GridConnect GmbH (formerly known as PSI Nentec GmbH) Telecontrol Gateway and Smart Telecontrol Unit family, IEC104 Security Proxy.. 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-2019-6528/ (Markdown: https://insights.sbomify.com/CVE-2019-6528/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2019-6528
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2019-6528
- OSV: https://osv.dev/vulnerability/CVE-2019-6528

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From sbomify Insights: https://insights.sbomify.com/CVE-2019-6528/
Summaries are generated and may contain mistakes; the official description above is the record.