VulnerabilityModified
CVE-2024-33897
A compromised HMS Networks Cosy+ device could be used to request a Certificate Signing Request from Talk2m for another device, resulting in an availability issue.
CRITICAL 9.1EPSS 0.66%
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.66%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
A compromised HMS Networks Cosy+ device could be used to request a Certificate Signing Request from Talk2m for another device, resulting in an availability issue. The issue was patched on the Talk2m production server on April 18, 2024.
- CVSS 3.1
- 9.1 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
- EPSS
- 0.66% probability · 50th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-425
- Affected
- hms-networks/ewon cosy\+ firmware
- Source
- cve@mitre.org
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-securityNot Applicable
- http://seclists.org/fulldisclosure/2024/Aug/24
- http://seclists.org/fulldisclosure/2024/Aug/27
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.