CVE-2024-33893 json
Cosy+ devices running a firmware 21.x below 21.2s10 or a firmware 22.x below 22.1s3 are vulnerable to XSS when displaying the logs due to i…
published 2024-08-02 2 y ago modified 2026-06-17 4 mo ago also EUVD-2024-31597
- cvss
- 6.1
- 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 53%
- public exploits
- 0
- none known
Summary
Cosy+ devices running a firmware 21.x below 21.2s10 or a firmware 22.x below 22.1s3 are vulnerable to XSS when displaying the logs due to improper input sanitization. This is fixed in version 21.2s10 and 22.1s3.
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2 y ago
Exploit prediction
0.71% chance of exploitation in the next 30 days, higher than 53% 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 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| NVD | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
| CNA | 3.1 | 6.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N |
Classification
- Weakness
-
- CWE-79 Improper Neutralization of Input During Web Page Generation
References
-
blog.syss.com
/posts/hacking-a-secure-industrial-remote-access-gateway/
exploit, third-party-advisory
-
hms-networks.com
/cyber-security
vdb-entry, vendor-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
- seclists.org /fulldisclosure/2024/Aug/19
- seclists.org /fulldisclosure/2024/Aug/22
Sources
- CVE List CVE-2024-33893
- NVD CVE-2024-33893
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.