Paper/Archive/CVE-2024-33897

CVE-2024-33897

hms-networks ewon_cosy_firmware — A compromised HMS Networks Cosy+ device could be used to request a Certificate Signing Request from Talk2m for another device, resulting…

EPSS 0.7%CVSS 9.1

critical.is priorityof 100

CVSS 9.1 (ADP, NVD agree)9.1 / 10 × 3027.3 Not in CISA KEV+300.0 EPSS percentile 51.6.516 × 2010.3 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource

n/an/a–CNA

ewon_cosy_firmware21.0 – < 21.2s1021.2s10CISA-ADP

ewon_cosy_firmware22.0 – < 22.1s322.1s3CISA-ADP

Scores by source

CISA ADP9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

NVD9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: partial

References

refewon.biz/products/cosy/ewon-cosy-wifi refhms-networks.com/cyber-security refhmsnetworks.blob.core.windows.net/nlw/docs/default-source/products/cybersecurity/security-advisory/hms-security-advisory-2024-07-29-001--ewon-several-cosy--vulnerabilities.pdf refblog.syss.com/posts/hacking-a-secure-industrial-remote-access-gateway refseclists.org/fulldisclosure/2024/Aug/24 refseclists.org/fulldisclosure/2024/Aug/27