CVE-2024-33893

Name: CVE-2024-33893
Creator: NVD / NIST
Published: 2024-08-02T18:16:18.743+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 6.1/10EPSS 0.70%

Last modified Jun 17, 2026

CVE-2024-33893 is a medium-severity vulnerability rated 6.1/10 on the CVSS scale. Cosy+ devices running a firmware 21.x below 21.2s10 or a firmware 22.x below 22.1s3 are vulnerable to XSS when displaying the logs due to improper input sanitization. This is fixed in version 21.2s10 and 22.1s3.. EPSS estimates a 0.70% chance of exploitation in the next 30 days.

Description

Cosy+ devices running a firmware 21.x below 21.2s10 or a firmware 22.x below 22.1s3 are vulnerable to XSS when displaying the logs due to improper input sanitization. This is fixed in version 21.2s10 and 22.1s3.

Metrics

CVSS 3.1

6.1/10

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

EPSS Probability

0.70%

48.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Hms-Networks	Ewon Cosy\+ Firmware	>= 21.0, <= 21.2s10
Hms-Networks	Ewon Cosy\+ Firmware	>= 22.0, <= 22.1s3

References

https://blog.syss.com/posts/hacking-a-secure-industrial-remote-access-gateway/Exploit, Third Party Advisory
https://hmsnetworks.blob.core.windows.net/nlw/docs/default-source/products/cybersecurity/security-advisory/hms-security-advisory-2024-07-29-001--ewon-several-cosy--vulnerabilities.pdfVendor Advisory
https://www.ewon.biz/products/cosy/ewon-cosy-wifiProduct
https://www.hms-networks.com/cyber-securityVDB Entry, Vendor Advisory
http://seclists.org/fulldisclosure/2024/Aug/19
http://seclists.org/fulldisclosure/2024/Aug/22

Timeline

Published: Aug 2, 2024
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2024-33893?

How severe is CVE-2024-33893?

CVE-2024-33893 has a CVSS score of 6.1/10 (MEDIUM severity). The EPSS model estimates a 0.70% probability of exploitation in the next 30 days.

How do I fix CVE-2024-33893?

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-2024-33893?

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

Scan your code now

Source: NVD / NIST