# CVE-2025-55904: Null dereference in n/a

> Attackers can cause denial of service in Open5GS network functions by sending empty multipart HTTP requests, requiring a patch to fix.

- **Severity:** Medium 4.0 (`CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L`)
- **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:** 17 Sep 2025
- **Updated:** 17 Sep 2025
- **Also known as:** GHSA-83r7-xqx3-27xr

## What is CVE-2025-55904?

CVE-2025-55904 is a medium-severity vulnerability in Open5gs Open5gs, published on 17 Sep 2025. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

Open5GS v2.7.5, prior to commit 67ba7f92bbd7a378954895d96d9d7b05d5b64615, is vulnerable to a NULL pointer dereference when a multipart/related HTTP POST request with an empty HTTP body is sent to the SBI of either AMF, AUSF, BSF, NRF, NSSF, PCF, SMF, UDM, or UDR, resulting in a denial of service. This occurs in the parse_multipart function in lib/sbi/message.c.

Weakness: CWE-476 (NULL Pointer Dereference)

## Which versions are affected by CVE-2025-55904?

It affects 1 product.


Products: Open5gs Open5gs.

## How do I fix CVE-2025-55904?

No fix has been published for CVE-2025-55904 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-55904 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-55904 exists.

## Other vulnerabilities in Open5gs Open5gs

- [CVE-2024-40130](https://insights.sbomify.com/CVE-2024-40130/): Memory corruption in n/a (critical 9.8)
- [CVE-2021-28122](https://insights.sbomify.com/CVE-2021-28122/): Missing authorization in n/a (critical 9.8)
- [CVE-2021-25863](https://insights.sbomify.com/CVE-2021-25863/): Hardcoded credentials in n/a (high 8.8)
- [CVE-2025-41067](https://insights.sbomify.com/CVE-2025-41067/): Reachable Assertion vulnerability in Open5GS (high 8.7)
- [CVE-2025-41068](https://insights.sbomify.com/CVE-2025-41068/): Reachable Assertion vulnerability in Open5GS (high 8.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-55904 and fix it if it is affected.

What it is: CVE-2025-55904 is a medium-severity vulnerability in Open5gs Open5gs, published on 17 Sep 2025. It can only be exploited from the same machine or local network, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2025-55904 exists.

Affected product: Open5gs Open5gs. 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-2025-55904/ (Markdown: https://insights.sbomify.com/CVE-2025-55904/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-55904
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-55904
- OSV: https://osv.dev/vulnerability/CVE-2025-55904

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-55904/
Summaries are generated and may contain mistakes; the official description above is the record.