Insecure Permission vulnerability in Cosy+ devices running a firmware 21.x below 21.2s10 or a firmware 22.x below 22.1s3 are executing several processes with elevated privileges.
Conclusion & alert: CVE-2024-33894 is rated High Exploit Risk (76.1/100): CVSS High severity, with medium exploitation likelihood (EPSS 0.79%). Core evidence: 2 public exploit reference(s) are indexed (Exploit-DB). Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
| EDB-ID | Source | Kind | Published | Link |
|---|---|---|---|---|
| — | nvd_ref | exploit_tag | Exploit-DB ↗ | |
| — | nvd_ref | exploit_tag | Exploit-DB ↗ |
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2025-12-22 | 0.58% | 0.79% | +0.21% |
| 2 | 2025-11-21 | 0.47% | 0.58% | +0.11% |
| 3 | 2025-11-18 | — | 0.47% | — |
Full EPSS history (10 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 8.8 | 3.1 | HIGH |
|
2.8 | 5.9 | 134c704f-9b21-4f2e-91b3-4a467353bcc0 |
| Vendor | Product | Version | Raw CPE |
|---|---|---|---|
| hms-networks | ewon_cosy\+_firmware | >= 21.0s0, < 21.2s10 | cpe:2.3:o:hms-networks:ewon_cosy\+_firmware:*:*:*:*:*:*:*:* |
| hms-networks | ewon_cosy\+_firmware | >= 22.0s0, < 22.1s3 | cpe:2.3:o:hms-networks:ewon_cosy\+_firmware:*:*:*:*:*:*:*:* |
| URL | Tags |
|---|---|
| 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.pdf | Vendor Advisory |
| https://www.ewon.biz/products/cosy/ewon-cosy-wifi | Product |
| https://www.hms-networks.com/cyber-security | Vendor Advisory |
| http://seclists.org/fulldisclosure/2024/Aug/23 | Exploit Mailing List |