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CVE-2024-33893

19
FAUCET Score

CVE-2024-33893 is a medium-severity Cross-Site Scripting (XSS) vulnerability affecting HMS Networks Cosy+ devices running firmware versions below 21.2s10 or 22.1s3. The flaw stems from improper input sanitization when displaying logs, allowing an attacker to inject malicious scripts. With a CVSS score of 6.1, this vulnerability requires user interaction (UI:R) and could lead to low confidentiality and integrity impacts (C:L, I:L). There is currently no evidence of active exploitation, public exploit code (Metasploit, Nuclei, ExploitDB), or significant community discussion surrounding this CVE.

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

6.1MEDIUM

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

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
REQUIRED
Scope
CHANGED
Confidentiality Impact
LOW
Integrity Impact
LOW
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
2.7
CvssVersion
3.1

Exploit Intelligence

EPSS Score
0.71%
Probability of exploitation in next 30 days
EPSS Percentile
50.0%
Percentile rank of EPSS score among Peer Group
As of 2026-07-26
Model: v2026.06.15
This CVE's current EPSS score of 0.0072 is in the 56th percentile among its peer group of 26,219 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 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/19
seclists.org / fulldisclosure/2024/Aug/22
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
VDB EntryVendor Advisory