# CVE-2023-5246: Auth bypass in FX0-GENT00000

> Unauthenticated remote attackers can bypass authentication via capture-replay, compromising gateway availability, integrity, and confidentiality.

- **Severity:** High 8.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 23 Oct 2023
- **Updated:** 1 Jun 2026
- **Also known as:** GHSA-9w2j-4f43-pmmh

## What is CVE-2023-5246?

CVE-2023-5246 is a high-severity authentication bypass vulnerability in SICK AG FX0-GENT00000, published on 23 Oct 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

Authentication Bypass by Capture-replay in SICK Flexi Soft Gateways with Partnumbers 1044073, 1127717, 1130282, 1044074, 1121597, 1099832, 1051432, 1127487, 1069070, 1112296, 1044072, 1121596, 1099830 allows an unauthenticated remote attacker to potentially impact the availability, integrity and confidentiality of the gateways via an authentication bypass by capture-replay.

Weakness: CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2023-5246?

It affects 13 products.


Products: Sick Fx0-Gent00000 Firmware, Sick Fx0-Gent00010 Firmware, Sick Fx0-Gent00030 Firmware, Sick Fx0-Gepr00000 Firmware, Sick Fx0-Gepr00010 Firmware, Sick Fx0-Get00000 Firmware, Sick Fx0-Get00010 Firmware, Sick Fx0-Gmod00000 Firmware, Sick Fx0-Gmod00010 Firmware, Sick Fx0-Gmod00030 Firmware, Sick Fx0-Gpnt00000 Firmware, Sick Fx0-Gpnt00010 Firmware, Sick Fx0-Gpnt00030 Firmware.

## How do I fix CVE-2023-5246?

No fix has been published for CVE-2023-5246 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-5246 being exploited?

There is no known exploitation of CVE-2023-5246 in the wild and no public exploit code.

## Other vulnerabilities in SICK AG FX0-GENT00000

- [CVE-2023-23451](https://insights.sbomify.com/CVE-2023-23451/): Hardcoded credentials in SICK FX0-GENT00000, SICK FX0-GENT00030, SICK FX0-GMOD00000, SICK FX0-GMOD00010, SICK FX0-GPNT00000, SICK FX0-GPNT00030, SICK UE410-EN1, SICK UE410-EN3, SICK UE410-EN3S04, SICK UE410-EN4 (critical 9.8)
- [CVE-2023-23453](https://insights.sbomify.com/CVE-2023-23453/): Missing authorization in FX0-GENT v3 Firmware (critical 9.8)
- [CVE-2023-23444](https://insights.sbomify.com/CVE-2023-23444/): Missing authorization in FX0-GENT00000 FLEXISOFT EIP GATEW. (high 7.5)
- [CVE-2019-14753](https://insights.sbomify.com/CVE-2019-14753/): Memory corruption in n/a (high 7.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-5246 and fix it if it is affected.

What it is: CVE-2023-5246 is a high-severity authentication bypass vulnerability in SICK AG FX0-GENT00000, published on 23 Oct 2023. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2023-5246 in the wild and no public exploit code.

Affected product: SICK AG FX0-GENT00000. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2023-5246/ (Markdown: https://insights.sbomify.com/CVE-2023-5246/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-5246
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-5246
- OSV: https://osv.dev/vulnerability/CVE-2023-5246

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-5246/
Summaries are generated and may contain mistakes; the official description above is the record.