CVE-2024-33897 json
A compromised HMS Networks Cosy+ device could be used to request a Certificate Signing Request from Talk2m for another device, resulting in…
published 2024-08-06 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-31601
- cvss
- 9.1
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 51%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- hms-networks ewon_cosy_firmware 21.2s10, 22.1s3
CISA SSVC
- Exploitation
- none
- Automatable
- yes
- Technical impact
- partial
- Assessed
- 2 y ago
Exploit prediction
0.66% chance of exploitation in the next 30 days, higher than 51% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- blog.syss.com https://blog.syss.com/posts/hacking-a-secure-industrial-remote-access-gateway/ referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CISA ADP | 3.1 | 9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H |
| NVD | 3.1 | 9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H |
| CNA | 3.1 | 9.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H |
Affected products
- hms-networks ewon_cosy_firmware
Classification
- Weakness
-
- CWE-425 Direct Request
References
-
blog.syss.com
/posts/hacking-a-secure-industrial-remote-access-gateway/
exploit, third-party-advisory
-
hmsnetworks.blob.core.windows.net
/nlw/docs/default-source/products/cybersecurity/security-advisory/hms-security-advisory-2024-07-29-001--ewon-s
vendor-advisory
-
ewon.biz
/products/cosy/ewon-cosy-wifi
product
-
hms-networks.com
/cyber-security
not-applicable
- seclists.org /fulldisclosure/2024/Aug/24
- seclists.org /fulldisclosure/2024/Aug/27
Sources
- CVE List CVE-2024-33897
- NVD CVE-2024-33897
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