CVE-2024-39838 — ZWX-2000CSW2-HN firmware versions prior to Ver

ZWX-2000CSW2-HN firmware versions prior to Ver.0.3.15 uses hard-coded credentials, which may allow a network-adjacent attacker with an administrative privilege to alter the configuration of the device.

01What is this vulnerability?

ZWX-2000CSW2-HN firmware versions prior to Ver.0.3.15 uses hard-coded credentials, which may allow a network-adjacent attacker with an administrative privilege to alter the configuration of the device.

02Affected products

Vendor	Product	Versions
ZEXELON CO., LTD.	ZWX	2000CSW2-HN — firmware versions prior to Ver.0.3.15

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Open the Sigma generator with a pre-filled prompt for this CVE to draft a starting detection in your stack of choice:

Open in Sigma generator →

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2024-08-05T04:35:39.287Z
• Last modified: 2025-03-25T16:20:44.015Z

09References

• www.zexelon.co.jp — https://www.zexelon.co.jp/pdf/jvn70666401.pdf
• jvn.jp — https://jvn.jp/en/jp/JVN70666401/