CVE-2020-24033

8.8 highEPSS 1.0%

High (8.8) in fs s3900 24t4s firmware. EPSS 1.0% 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.

Severity

CVSS 3.1

8.8 high

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

EPSS: 1.0% chance of exploitation in the next 30 days; higher than 61% of CVEs (scores of 2026-10-31)
CWE: CWE-352
Published: 2020-10-22
Modified: 2026-06-17
Record from: the NVD, synced 2026-10-19

Affected

fs:s3900_24t4s_firmware

References

https://github.com/M0NsTeRRR/CVE-2020-24033
https://github.com/M0NsTeRRR/S3900-24T4S-CSRF-vulnerability
https://github.com/M0NsTeRRR/CVE-2020-24033
https://github.com/M0NsTeRRR/S3900-24T4S-CSRF-vulnerability

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