CVE-2024-33896 EXPLOIT
7.2
HIGH · CVSS 3.1 · EPSS 4% (pctl 90)
Patch early
A public exploit exists.
Description
Cosy+ devices running a firmware 21.x below 21.2s10 or a firmware 22.x below 22.1s3 are vulnerable to code injection due to improper parameter blacklisting. This is fixed in version 21.2s10 and 22.1s3.
Scoring
| CVSS | 7.2 (HIGH, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 4.02% — more likely to be exploited than 90% of all CVEs |
| Weakness | CWE-78 |
| On CISA KEV | no |
| Public exploit | yes |
| Published | 2024-08-02 |
| Last modified | 2026-06-17 |
Affected (7)
| Vendor | Product |
|---|---|
| hms-networks | ewon cosy\+ 4g apac |
| hms-networks | ewon cosy\+ 4g eu |
| hms-networks | ewon cosy\+ 4g jp |
| hms-networks | ewon cosy\+ 4g na |
| hms-networks | ewon cosy\+ ethernet |
| hms-networks | ewon cosy\+ firmware |
| hms-networks | ewon cosy\+ wifi |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Cosy+ firmware 21.2s7 - Command Injection | 2025-04-10 |
References
- https://blog.syss.com/posts/hacking-a-secure-industrial-remote-access-gateway/
- 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.pdf
- https://www.ewon.biz/products/cosy/ewon-cosy-wifi
- https://www.hms-networks.com/cyber-security
- http://seclists.org/fulldisclosure/2024/Aug/21
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