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. The issue was patched on the Talk2m production server on April 18, 2024.
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ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTNIST
9.1 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
mitreCNA
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CISA-ADPADP
9.1 CRITICAL
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
CVEADP
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Base Score
CVSS 3.x
EPSS Score
Percentile: 57%
VendorProductVersion
hms-networksewon_cosy\+_firmware
21.0s0 ≤
𝑥
< 21.2s10
hms-networksewon_cosy\+_firmware
22.0s0 ≤
𝑥
< 22.1s3
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://blog.syss.com/posts/hacking-a-secure-industrial-remote-access-gateway/
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
https://www.ewon.biz/products/cosy/ewon-cosy-wifi
https://www.hms-networks.com/cyber-security
http://seclists.org/fulldisclosure/2024/Aug/24
http://seclists.org/fulldisclosure/2024/Aug/27