CVE-2020-24033

Name: CVE-2020-24033
Creator: NVD / NIST
Published: 2020-10-22T14:15:13.457+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.8/10EPSS 0.97%

Last modified Jun 17, 2026

CVE-2020-24033 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. 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.. EPSS estimates a 0.97% chance of exploitation in the next 30 days.

Description

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.

Metrics

CVSS 3.1

8.8/10

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

EPSS Probability

0.97%

57.4th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-352

Affected Software

Vendor	Product	Versions
Fs	S3900 24t4s Firmware	<= 1.7.0

References

https://github.com/M0NsTeRRR/CVE-2020-24033Exploit, Third Party Advisory
https://github.com/M0NsTeRRR/S3900-24T4S-CSRF-vulnerabilityExploit, Third Party Advisory
https://github.com/M0NsTeRRR/CVE-2020-24033Exploit, Third Party Advisory
https://github.com/M0NsTeRRR/S3900-24T4S-CSRF-vulnerabilityExploit, Third Party Advisory

Timeline

Published: Oct 22, 2020
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2020-24033?

How severe is CVE-2020-24033?

CVE-2020-24033 has a CVSS score of 8.8/10 (HIGH severity). The EPSS model estimates a 0.97% probability of exploitation in the next 30 days.

How do I fix CVE-2020-24033?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2020-24033?

Run a free Strix scan to check your systems for this vulnerability.

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Source: NVD / NIST