CVE-2024-3576 — The NPort 5100A Series firmware version v1

The NPort 5100A Series firmware version v1.6 and prior versions are affected by web server XSS vulnerability. The vulnerability is caused by not correctly neutralizing user-controllable input before placing it in output. Malicious users may use the vulnerability to get sensitive

01What is this vulnerability?

The NPort 5100A Series firmware version v1.6 and prior versions are affected by web server XSS vulnerability. The vulnerability is caused by not correctly neutralizing user-controllable input before placing it in output. Malicious users may use the vulnerability to get sensitive information and escalate privileges.

02Affected products

Vendor	Product	Versions
Moxa	NPort 5100A Series	1.0

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:

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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: 2024-05-06T12:04:47.826Z
• Last modified: 2024-08-01T20:12:07.894Z

09References

• www.moxa.com — https://www.moxa.com/en/support/product-support/security-advisory/mpsa-246328-np…