CVE-2021-32030 ASUS Routers: login or permission bypass
In plain words: A door that should be locked is not: part of the system can be reached without a valid login or permission. The attacker gets in as a user or administrator without knowing a password.
Confirmed exploited by CISA on · US federal patch deadline Jun 23, 2025
What to do
- Install ASUS's security update for 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
- ASUS Routers Improper Authentication Vulnerability
- Product
- ASUS Routers
- CISA description
- ASUS Lyra Mini and ASUS GT-AC2900 devices contain an improper authentication vulnerability that allows an attacker to gain unauthorized access to the administrative interface. The impacted products could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization.
- Type of flaw
- Login or permission bypass (CWE-287)
- Confirmed exploited
- Jun 2, 2025
- US federal patch deadline
- Jun 23, 2025
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Answering about CVE-2021-32030 ·
Questions about CVE-2021-32030
Is CVE-2021-32030 being exploited?
Yes. CISA added CVE-2021-32030 to its Known Exploited Vulnerabilities catalog on Jun 2, 2025, which means there is reliable evidence of real-world attacks.
How do I fix CVE-2021-32030?
Install ASUS's security update for 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-2021-32030?
Only if you use ASUS Routers. This one is aimed at devices or apps of the kind people own.