CVE-2025-9377 TP-Link Multiple Routers: command or code injection
In plain words: The program treats text it receives as instructions instead of plain data. The attacker can run commands on the machine — often the whole device is taken over.
Confirmed exploited by CISA on · US federal patch deadline Sep 24, 2025
What to do
- Install TP-Link's security update for Multiple Routers. If no update exists, follow the vendor's workaround or stop using the product until one ships.
- Turn on automatic firmware updates and replace gear the maker no longer supports.
- Change default passwords and switch off remote administration and features you do not use.
- Do not put storage boxes or cameras directly on the internet — use the maker's app or a VPN.
Who is affected
Could reach you. This one is aimed at devices or apps of the kind people own.
What's at risk: Taken over in bulk to join botnets, used to watch your traffic, or — for storage boxes — locked by ransomware.
The details
- Official name
- TP-Link Archer C7(EU) and TL-WR841N/ND(MS) OS Command Injection Vulnerability
- Product
- TP-Link Multiple Routers
- CISA description
- TP-Link Archer C7(EU) and TL-WR841N/ND(MS) contain an OS command injection vulnerability that exists in the Parental Control page. The impacted products could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization.
- Type of flaw
- Command or code injection (CWE-78)
- Confirmed exploited
- Sep 3, 2025
- US federal patch deadline
- Sep 24, 2025
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Answering about CVE-2025-9377 ·
Questions about CVE-2025-9377
Is CVE-2025-9377 being exploited?
Yes. CISA added CVE-2025-9377 to its Known Exploited Vulnerabilities catalog on Sep 3, 2025, which means there is reliable evidence of real-world attacks.
How do I fix CVE-2025-9377?
Install TP-Link's security update for Multiple Routers. If no update exists, follow the vendor's workaround or stop using the product until one ships. Turn on automatic firmware updates and replace gear the maker no longer supports.
Am I affected by CVE-2025-9377?
Only if you use TP-Link Multiple Routers. This one is aimed at devices or apps of the kind people own.