# CVE-2020-8474: ABB System 800xA Weak Registry Permissions

> Low-privileged attackers can modify registry settings in ABB System 800xA, causing control system functions to stop or malfunction.

- **Severity:** High 7.8 (`CVSS:3.1/AV:L/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:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 22 Apr 2020
- **Updated:** 4 Aug 2024
- **Also known as:** GHSA-wmcj-w5p4-34v2

## What is CVE-2020-8474?

CVE-2020-8474 is a high-severity vulnerability in ABB System 800xA Base, published on 22 Apr 2020. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Weak Registry permissions in ABB System 800xA Base allow low privileged users to read and modify registry settings related to control system functionality, allowing an authenticated attacker to cause system functions to stop or malfunction.

Weakness: CWE-269 (Improper Privilege Management), CWE-275

## Which versions are affected by CVE-2020-8474?

It affects 1 product.


Products: Abb 800xa Base System.

## How do I fix CVE-2020-8474?

No fix has been published for CVE-2020-8474 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-8474 being exploited?

There is no known exploitation of CVE-2020-8474 in the wild and no public exploit code.

## Other vulnerabilities in ABB System 800xA Base

- [CVE-2020-8473](https://insights.sbomify.com/CVE-2020-8473/): ABB System 800xA Weak File Permissions - ABB System 800xA Base (high 7.3)
- [CVE-2024-3036](https://insights.sbomify.com/CVE-2024-3036/): Communication DoS vulnerability (medium 6.9)
- [CVE-2020-8487](https://insights.sbomify.com/CVE-2020-8487/): ABB System 800xA Inter process communication vulnerability - System 800xA Base (medium 6.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-8474 and fix it if it is affected.

What it is: CVE-2020-8474 is a high-severity vulnerability in ABB System 800xA Base, published on 22 Apr 2020. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2020-8474 in the wild and no public exploit code.

Affected product: ABB System 800xA Base. 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-2020-8474/ (Markdown: https://insights.sbomify.com/CVE-2020-8474/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-8474
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-8474
- OSV: https://osv.dev/vulnerability/CVE-2020-8474

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-8474/
Summaries are generated and may contain mistakes; the official description above is the record.