TI-2024-22367 Aliases CVE-2024-33895 GHSA-2m5g-p4h5-r9jp

Cosy+ devices running a firmware 21.x below 21.2s10 or a firmware 22.x below 22.1s3 use a…

LOW 30CWE-798Published 2024-08-02 · Updated 2025-11-04

Key facts

Attack vector: Physical
Privileges required: None
User interaction: Required
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: High · High · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-798.

Summary

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. This is fixed in version 21.2s10 and 22.1s3, the key is now unique per device.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00515 44th 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: No
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::::::::	21.0 – 21.2s10; 22.0 – 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 21.0 – 21.2s10; 22.0 – 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-2024-33895
2026-10-03 Alias added: GHSA-2m5g-p4h5-r9jp

References

Exploit 1

https://blog.syss.com/posts/hacking-a-secure-industrial-remote-access-gateway/

Advisory 2

Other 1

https://www.ewon.biz/products/cosy/ewon-cosy-wifi

TI-2024-22369 A compromised HMS Networks Cosy+ device could be used to request a Certificate Signing… CVSS 3.1CRITICAL 9.1
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-2024-22365 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

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences