Critical severity · published Aug 6, 2024
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
9.1
CVSS
0.7%
EPSS
No
On KEV
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 vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Attack vector
Network
Complexity
Low
Privileges
None
User interaction
None
Confidentiality
None
Integrity
High
Availability
High
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.7% · higher than 51% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
EC
Ewon Cosy+ Firmware · Hms-networks
21.0s0 before 21.2s10; 22.0s0 before 22.1s3 · source: NVD
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2024-33897
CVE.org
https://www.cve.org/CVERecord?id=CVE-2024-33897
Exploit
https://blog.syss.com/posts/hacking-a-secure-industrial-remote-access-gateway/
Vendor 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
Product
https://www.ewon.biz/products/cosy/ewon-cosy-wifi
Not Applicable
https://www.hms-networks.com/cyber-security
seclists.org
http://seclists.org/fulldisclosure/2024/Aug/24
seclists.org
http://seclists.org/fulldisclosure/2024/Aug/27
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7.5
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7.2
CVE-2024-33896
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6.6
CVE-2024-33895
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
6.1
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Cosy+ devices running a firmware 21.x below 21.2s10 or a firmware 22.x below 22.1s3 are vulnerable to XSS when displaying the logs due to improper input sanitization