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CVE-2024-33896

33
FAUCET Score

CVE-2024-33896 is a critical code injection vulnerability affecting HMS Networks Ewon Cosy+ devices running firmware versions 21.x below 21.2s10 or 22.x below 22.1s3, due to improper parameter blacklisting. This vulnerability carries a CVSS score of 7.2 (High), indicating that an authenticated attacker can remotely execute arbitrary code with high impact on confidentiality, integrity, and availability. While not currently on the KEV catalog or Hot List, an ExploitDB entry (EDB-52160) for command injection exists, suggesting public exploit code is available, though there is minimal community discussion or media coverage.

Impacted Technologies

VendorProductVersion(s)CPE
>= 21.0, <= 21.2s10CPE matchmatch criteria
cpe:2.3:o:hms-networks:ewon_cosy\+_firmware:*:*:*:*:*:*:*:*
>= 22.0, <= 22.1s3CPE matchmatch criteria
cpe:2.3:o:hms-networks:ewon_cosy\+_firmware:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

7.2HIGH

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
HIGH
Availability Impact
HIGH
Exploitability Score
1.2
Impact Score
5.9
CvssVersion
3.1

Exploit Intelligence

EPSS Score
4.02%
Probability of exploitation in next 30 days
EPSS Percentile
89.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
ExploitDB: EDB-52160 · Apr 10, 2025
This CVE's current EPSS score of 0.0402 is in the 88th percentile among its peer group of 5,531 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.3 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Remediation records are not available for this CVE.

References

seclists.org / fulldisclosure/2024/Aug/21
blog.syss.com / posts/hacking-a-secure-industrial-remote-access-gateway
ExploitThird Party Advisory
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
Vendor Advisory
ewon.biz / products/cosy/ewon-cosy-wifi
Product
hms-networks.com / cyber-security
Vendor Advisory