Cosy+ devices running a firmware · Insecure Permissions Vulnerability
Source GCVE Database
Not known to be exploited · CVSS 5.3 Medium · fixed in 22.1s3 : update affected systems when convenient.
Data as of 3 Nov 2026, 17:23 UTC
- Patch
- Available – fixed in 22.1s3, 21.2s10
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 2 Aug 2024
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 3 Nov 2026.
What to do
AI-suggested
Upgrade Cosy+ devices to firmware version 21.2s10 or later in the 21.x series, or to version 22.1s3 or later in the 22.x series to remediate this vulnerability. No additional mitigation steps are indicated.
Description
Cosy+ devices running firmware versions 21.x below 21.2s10 or 22.x below 22.1s3 have an insecure permissions vulnerability that can lead to information leakage through cookies. This vulnerability has been addressed in firmware versions 21.2s10 and 22.1s3.
References
- nvd.nist.gov/vuln/detail/CVE-2024-33892 (opens in a new tab)
- blog.syss.com/posts/hacking-a-secure-industrial-remote-access-gateway (opens in a new tab)
- 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 (opens in a new tab)
- ewon.biz/products/cosy/ewon-cosy-wifi (opens in a new tab)
- hms-networks.com/cyber-security (opens in a new tab)
- seclists.org/fulldisclosure/2024/Aug/20 (opens in a new tab)