CVE-2020-24033: Fs s3900 24t4s Firmware

High severity, CVSS 8.8. EPSS: 1% chance of exploitation in the next 30 days.

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.

Affected products

• Fs s3900 24t4s Firmware: up to and including 1.7.0

Published 2020-10-22. Last modified 2026-06-17.