CVE-2023-33538 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 Jul 7, 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 Multiple Routers Command Injection Vulnerability
- Product
- TP-Link Multiple Routers
- CISA description
- TP-Link TL-WR940N V2/V4, TL-WR841N V8/V10, and TL-WR740N V1/V2 contain a command injection vulnerability via the component /userRpm/WlanNetworkRpm. 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-77)
- Confirmed exploited
- Jun 16, 2025
- US federal patch deadline
- Jul 7, 2025
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Answering about CVE-2023-33538 ·
Questions about CVE-2023-33538
Is CVE-2023-33538 being exploited?
Yes. CISA added CVE-2023-33538 to its Known Exploited Vulnerabilities catalog on Jun 16, 2025, which means there is reliable evidence of real-world attacks.
How do I fix CVE-2023-33538?
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-2023-33538?
Only if you use TP-Link Multiple Routers. This one is aimed at devices or apps of the kind people own.