An improper access control vulnerability in SMA100 allows a remote unauthenticated attacker to bypass the path traversal checks and delete an arbitrary file potentially resulting in a reboot to factory default settings.
https://www.tenable.com/cyber-exposure/2021-threat-landscape-retrospective
https://psirt.global.sonicwall.com/vuln-detail/SNWLID-2021-0021
http://packetstormsecurity.com/files/164564/SonicWall-SMA-10.2.1.0-17sv-Password-Reset.html