# CVE-2020-24676: Insecure Windows Services in Symphony Plus

> An authenticated unprivileged user can execute arbitrary code and escalate privileges via insecure Windows services in ABB Symphony Plus.

- **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 Dec 2020
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-fwv4-f9xf-wp89

## What is CVE-2020-24676?

CVE-2020-24676 is a high-severity vulnerability in ABB Ability™ Symphony® Plus Historian, published on 22 Dec 2020. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

In Symphony Plus Operations and Symphony Plus Historian, some services can be vulnerable to privilege escalation attacks. An unprivileged (but authenticated) user could execute arbitrary code and result in privilege escalation, depending on the user that the service runs as.

Weakness: CWE-274 (Improper Handling of Insufficient Privileges)

## Which versions are affected by CVE-2020-24676?

It affects 2 products.


Products: Abb Symphony \+ Historian, Abb Symphony \+ Operations.

## How do I fix CVE-2020-24676?

No fix has been published for CVE-2020-24676 yet. Limit exposure of the affected software until one is available.

## Is CVE-2020-24676 being exploited?

There is no known exploitation of CVE-2020-24676 in the wild and no public exploit code.

## Other vulnerabilities in ABB Ability™ Symphony® Plus Historian

- [CVE-2020-24673](https://insights.sbomify.com/CVE-2020-24673/): SQL Injection in Symphony Plus (critical 9.8)
- [CVE-2020-24675](https://insights.sbomify.com/CVE-2020-24675/): Weak Authentication in Symphony Plus (critical 9.8)
- [CVE-2020-24683](https://insights.sbomify.com/CVE-2020-24683/): Authentication Bypass in Symphony Plus (critical 9.8)
- [CVE-2020-24674](https://insights.sbomify.com/CVE-2020-24674/): Improper Authorization in Symphony Plus (high 8.8)
- [CVE-2020-24677](https://insights.sbomify.com/CVE-2020-24677/): Insecure Web Service in Symphony Plus (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2020-24676 and fix it if it is affected.

What it is: CVE-2020-24676 is a high-severity vulnerability in ABB Ability™ Symphony® Plus Historian, published on 22 Dec 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-2020-24676 in the wild and no public exploit code.

Affected product: ABB Ability™ Symphony® Plus Historian. 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-2020-24676/ (Markdown: https://insights.sbomify.com/CVE-2020-24676/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2020-24676
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2020-24676
- OSV: https://osv.dev/vulnerability/CVE-2020-24676

---
From sbomify Insights: https://insights.sbomify.com/CVE-2020-24676/
Summaries are generated and may contain mistakes; the official description above is the record.