CVE-2020-9054 Zyxel Multiple Network-Attached Storage (NAS) Devices: 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 Apr 15, 2022
What to do
- Install Zyxel's security update for Multiple Network-Attached Storage (NAS) Devices. 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
- Zyxel Multiple NAS Devices OS Command Injection Vulnerability
- Product
- Zyxel Multiple Network-Attached Storage (NAS) Devices
- CISA description
- Multiple Zyxel network-attached storage (NAS) devices contain a pre-authentication command injection vulnerability, which may allow a remote, unauthenticated attacker to execute arbitrary code.
- Type of flaw
- Command or code injection (CWE-78)
- Confirmed exploited
- Mar 25, 2022
- US federal patch deadline
- Apr 15, 2022
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Answering about CVE-2020-9054 ·
Questions about CVE-2020-9054
Is CVE-2020-9054 being exploited?
Yes. CISA added CVE-2020-9054 to its Known Exploited Vulnerabilities catalog on Mar 25, 2022, which means there is reliable evidence of real-world attacks.
How do I fix CVE-2020-9054?
Install Zyxel's security update for Multiple Network-Attached Storage (NAS) Devices. 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-2020-9054?
Only if you use Zyxel Multiple Network-Attached Storage (NAS) Devices. This one is aimed at devices or apps of the kind people own.