# CVE-2023-38555: Auth bypass in SR-M 50AP1

> An unauthenticated network-adjacent attacker can bypass authentication to view, modify, or reset configuration settings on Fujitsu Si-R and SR-M series network devices.

- **Severity:** High 8.8 (`CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 26 Jul 2023
- **Updated:** 14 Nov 2024
- **Also known as:** GHSA-wgrg-g2m9-jr56

## What is CVE-2023-38555?

CVE-2023-38555 is a high-severity authentication bypass vulnerability in Fujitsu Limited SR-M 50AP1, published on 26 Jul 2023. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Authentication bypass vulnerability in Fujitsu network devices Si-R series and SR-M series allows a network-adjacent unauthenticated attacker to obtain, change, and/or reset configuration settings of the affected products. Affected products and versions are as follows: Si-R 30B all versions, Si-R 130B all versions, Si-R 90brin all versions, Si-R570B all versions, Si-R370B all versions, Si-R220D all versions, Si-R G100 V02.54 and earlier, Si-R G200 V02.54 and earlier, Si-R G100B V04.12 and earlier, Si-R G110B V04.12 and earlier, Si-R G200B V04.12 and earlier, Si-R G210 V20.52 and earlier, Si-R G211 V20.52 and earlier, Si-R G120 V20.52 and earlier, Si-R G121 V20.52 and earlier, and SR-M 50AP1 all versions.

Weakness: CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2023-38555?

It affects 16 products.


Products: Fujitsu Si-R220d Firmware, Fujitsu Si-R370b Firmware, Fujitsu Si-R570b Firmware, Fujitsu Si-R 130b Firmware, Fujitsu Si-R 30b Firmware, Fujitsu Si-R 90brin Firmware, Fujitsu Si-R G100 Firmware, Fujitsu Si-R G100b Firmware, Fujitsu Si-R G110b Firmware, Fujitsu Si-R G120 Firmware, Fujitsu Si-R G121 Firmware, Fujitsu Si-R G200 Firmware, Fujitsu Si-R G200b Firmware, Fujitsu Si-R G210 Firmware, Fujitsu Si-R G211 Firmware, Fujitsu Sr-M 50ap1 Firmware.

## How do I fix CVE-2023-38555?

No fix has been published for CVE-2023-38555 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-38555 being exploited?

There is no known exploitation of CVE-2023-38555 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-38555 and fix it if it is affected.

What it is: CVE-2023-38555 is a high-severity authentication bypass vulnerability in Fujitsu Limited SR-M 50AP1, published on 26 Jul 2023. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-38555 in the wild and no public exploit code.

Affected product: Fujitsu Limited SR-M 50AP1. 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-2023-38555/ (Markdown: https://insights.sbomify.com/CVE-2023-38555/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-38555
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-38555
- OSV: https://osv.dev/vulnerability/CVE-2023-38555

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From sbomify Insights: https://insights.sbomify.com/CVE-2023-38555/
Summaries are generated and may contain mistakes; the official description above is the record.