A compromised HMS Networks Cosy+ device could be used to request a Certificate Signing…
Priority MEDIUM 46CWE-425Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- None · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-425.
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0066 51st percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| — | — | all versions | — | No fix listed | CNA |
- — Vendor— Affected all versions Fixed in — No fix listed CNA
CPE configurations NVD · 7
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:hms-networks:ewon_cosy\+_firmware:*:*:*:*:*:*:*:* | 21.0s0 to before 21.2s10; 22.0s0 to before 22.1s3 | Vulnerable | HMS Networks |
| cpe:2.3:h:hms-networks:ewon_cosy\+_4g_apac:-:*:*:*:*:*:*:* | not specified by NVD | Running on | HMS Networks |
| cpe:2.3:h:hms-networks:ewon_cosy\+_4g_eu:-:*:*:*:*:*:*:* | not specified by NVD | Running on | HMS Networks |
| cpe:2.3:h:hms-networks:ewon_cosy\+_4g_jp:-:*:*:*:*:*:*:* | not specified by NVD | Running on | HMS Networks |
| cpe:2.3:h:hms-networks:ewon_cosy\+_4g_na:-:*:*:*:*:*:*:* | not specified by NVD | Running on | HMS Networks |
| cpe:2.3:h:hms-networks:ewon_cosy\+_ethernet:-:*:*:*:*:*:*:* | not specified by NVD | Running on | HMS Networks |
| cpe:2.3:h:hms-networks:ewon_cosy\+_wifi:-:*:*:*:*:*:*:* | not specified by NVD | Running on | HMS Networks |
- cpe:2.3:o:hms-networks:ewon_cosy\+_firmware:*:*:*:*:*:*:*:* Versions 21.0s0 to before 21.2s10; 22.0s0 to before 22.1s3 Vulnerable ·HMS Networks
- cpe:2.3:h:hms-networks:ewon_cosy\+_4g_apac:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·HMS Networks
- cpe:2.3:h:hms-networks:ewon_cosy\+_4g_eu:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·HMS Networks
- cpe:2.3:h:hms-networks:ewon_cosy\+_4g_jp:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·HMS Networks
- cpe:2.3:h:hms-networks:ewon_cosy\+_4g_na:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·HMS Networks
- cpe:2.3:h:hms-networks:ewon_cosy\+_ethernet:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·HMS Networks
- cpe:2.3:h:hms-networks:ewon_cosy\+_wifi:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·HMS Networks
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2024-33897
- 2026-10-03 Alias added: GHSA-x2r7-mhp8-xvhm
- 2026-10-08 EPSS moved to the 50th–90th percentile
References
More HMS Networks Ewon Cosy+ Firmware vulnerabilities
- TI-2024-22366 Insecure Permission vulnerability in Cosy+ devices running a firmware 21.x below 21.2s10… CVSS 3.1HIGH 8.8
- TI-2024-22364 Insecure Permissions vulnerability in Cosy+ devices running a firmware 21.x below 21.2s10… CVSS 3.1HIGH 7.5
- TI-2024-22368 Cosy+ devices running a firmware 21.x below 21.2s10 or a firmware 22.x below 22.1s3 are… CVSS 3.1HIGH 7.2
- TI-2024-22367 Cosy+ devices running a firmware 21.x below 21.2s10 or a firmware 22.x below 22.1s3 use a… CVSS 3.1MEDIUM 6.6
- TI-2024-22365 Cosy+ devices running a firmware 21.x below 21.2s10 or a firmware 22.x below 22.1s3 are… CVSS 3.1MEDIUM 6.1
Sources
- CVE-2024-33897 · CVE Program
- CVE-2024-33897 · NVD
- FIRST EPSS
- GHSA-x2r7-mhp8-xvhm · GitHub Advisory Database · CC BY 4.0
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