# Backdoor in Chinese-Made Zbtlink Routers Allows Unauthenticated Root Access

Security researchers found that certain Zbtlink router models ship with a hardcoded backdoor, allowing remote attackers to gain root shell access without any authentication. The flaw affects devices using a specific firmware version and could be exploited to hijack traffic or launch further attacks. Users are advised to check their router models and apply any available security updates immediately.

**Importance:** 3/5

## Sources

### Security
- [The Hacker News](https://thehackernews.com/2026/08/chinese-made-zbtlink-routers-ship-with.html) — Thu, 06 Aug 2026 13:35:22 +0530