“Actively exploited bug bypasses authentication on millions of routers” via Sergiu Gatlan | Bleeping Computer
“Threat actors actively exploit a critical authentication bypass vulnerability impacting home routers with Arcadyan firmware to take them over and deploy Mirai botnet malicious payloads.
The vulnerability tracked as CVE-2021-20090 is a critical path traversal vulnerability (rated 9.9/10) in the web interfaces of routers with Arcadyan firmware that could allow unauthenticated remote attackers to bypass”….
More detail here: https://www.bleepingcomputer.com/news/security/actively-exploited-bug-bypasses-authentication-on-millions-of-routers/