HOMEVULNERABILITIESCVE-2024-33897
CRITICAL

CVE-2024-33897

CWE-425Published: August 6, 2024· Updated: Jun 17, 2026

9.1
CVSS v3.1

Official Description

A compromised HMS Networks Cosy+ device could be used to request a Certificate Signing Request from Talk2m for another device, resulting in an availability issue. The issue was patched on the Talk2m production server on April 18, 2024.

NVD Source

Technical Analysis

CVE-2024-33897 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

The vulnerability requires no privileges and no user interaction, making it a prime target for automated exploitation campaigns and worm-like propagation.

A successful exploit results in full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 9.1.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.None
User InteractionNone
ScopeUnchanged
Impact
ConfidentialityNone
IntegrityHigh
AvailabilityHigh
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H

Affected Vendors & Products

hms-networks7 product(s)
ewon cosy\+ firmwareewon cosy\+ 4g apacewon cosy\+ 4g euewon cosy\+ 4g jpewon cosy\+ 4g naewon cosy\+ ethernetewon cosy\+ wifi
Source: NVD CPE · 7 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

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

All References (6)

→
https://blog.syss.com/posts/hacking-a-secure-industrial-remote-access-gateway/Exploit · Third Party Advisory
→
https://hmsnetworks.blob.core.windows.net/nlw/docs/default-source/products/cybersecurity/security-advisory/hms-security-advisory-2024-07-29-001--ewon-several-cosy--vulnerabilities.pdfVendor Advisory
→
https://www.ewon.biz/products/cosy/ewon-cosy-wifiProduct
→
https://www.hms-networks.com/cyber-securityNot Applicable
→
http://seclists.org/fulldisclosure/2024/Aug/24
→
http://seclists.org/fulldisclosure/2024/Aug/27

Quick Facts

CVE IDCVE-2024-33897
CVSS Score9.1 / 10
SeverityCRITICAL
WeaknessCWE-425
CISA KEVNo
Affected1 vendor(s)
PublishedAug 6, 2024

Related CVEs (CWE-425)

CVE-2018-3774
10.0
CVE-2024-42001
9.8
CVE-2017-14244
9.8
CVE-2025-26689
9.8
CVE-2024-24592
9.8
CVE-2017-17736
9.8

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2024-33897 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
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