// For flags

CVE-2024-33895

Ewon Cosy+ Hardcoded Key

Severity Score

6.6
*CVSS v3

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

1
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track
*SSVC
Descriptions

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.

The Ewon Cosy+ is a VPN gateway used for remote access and maintenance in industrial environments. Due to the use of a hardcoded cryptographic key, an attacker is able to decrypt encrypted data and retrieve sensitive information.

*Credits: N/A
CVSS Scores
Attack Vector
Physical
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
Low
Authentication
None
Confidentiality
Complete
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:Track
Exploitation
None
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2024-04-28 CVE Reserved
  • 2024-08-02 CVE Published
  • 2024-08-12 CVE Updated
  • 2024-08-19 First Exploit
  • 2024-09-04 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
CWE
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Hms-networks
Search vendor "Hms-networks"
 Ewon Cosy+ Firmware
Search vendor "Hms-networks" for product "Ewon Cosy+ Firmware"
*-
Affected