FS S3900 24T4S Firmware any version

FS S3900-24T4S devices allow authenticated attackers with guest access to escalate their privileges and reset the admin password.

An issue was discovered in fs.com S3900 24T4S 1.7.0 and earlier. The form does not have an authentication or token authentication mechanism that allows remote attackers to forge requests on behalf of a site administrator to change all settings including deleting users, creating new users with escalated privileges.