CVE-2024-33895

MEDIUM EPSS 39.1%
Published Aug 2, 20241y ago · Modified Jun 17, 20261w ago
6.6 CVSS 3.1
Medium
Find Similar
Published Aug 2, 2024 1y ago
Last Modified Jun 17, 2026 1w ago

Description

Cosy+ devices running a firmware 21.x below 21.2s10 or a firmware 22.x below 22.1s3 use a unique key to encrypt the configuration parameters. This is fixed in version 21.2s10 and 22.1s3, the key is now unique per device.

CVSS Details

Base Score
6.6
Exploitability
0.7
Impact
5.9
Vector string
CVSS:3.1/AV:P/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H
Attack Vector Physical
Attack Complexity Low
Privileges Required None
User Interaction Required
Scope Unchanged
Confidentiality High
Integrity High
Availability High

Threat Intelligence

EPSS Exploit Probability
39.1% percentile
Exploit & Patch Status
Public Exploit Known
No Patch Available

Weaknesses 1

CWE-798 Use of Hard-coded Credentials Authentication

Affected Products 8

VendorProductVersionRange
hms-networksewon_cosy\+_firmware*≥21.0  –  ≤21.2s10
hms-networksewon_cosy\+_firmware*≥22.0  –  ≤22.1s3
hms-networksewon_cosy\+_4g_apac*any
hms-networksewon_cosy\+_4g_eu*any
hms-networksewon_cosy\+_4g_jp*any
hms-networksewon_cosy\+_4g_na*any
hms-networksewon_cosy\+_ethernet*any
hms-networksewon_cosy\+_wifi*any

References 5

  • seclists.org http://seclists.org/fulldisclosure/2024/Aug/22
  • blog.syss.com https://blog.syss.com/posts/hacking-a-secure-industrial-remote-access-gateway/
    ExploitThird Party Advisory
  • hmsnetworks.blob.core.windows.net 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
  • ewon.biz https://www.ewon.biz/products/cosy/ewon-cosy-wifi
    Product
  • hms-networks.com https://www.hms-networks.com/cyber-security
    Vendor Advisory

Remediation

No remediation data recorded yet

Check vendor advisories and the NVD entry for patch availability.