# CVE-2024-31484: Null dereference in CPC80 Central Processing/Communication

> Attackers can execute code or cause denial of service in Siemens industrial devices via improper null termination in HTTP header parsing.

- **Severity:** High 7.3 (`CVSS:4.0/AV:L/AC:H/AT:N/PR:N/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 14 May 2024
- **Updated:** 13 Feb 2025
- **Also known as:** GHSA-42vc-vfqh-cr2x

## What is CVE-2024-31484?

CVE-2024-31484 is a high-severity vulnerability in Siemens CPC80 Central Processing/Communication, published on 14 May 2024. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.

### Official description

A vulnerability has been identified in CPC80 Central Processing/Communication (All versions < V16.41), CPCI85 Central Processing/Communication (All versions < V5.30), CPCX26 Central Processing/Communication (All versions < V06.02), ETA4 Ethernet Interface IEC60870-5-104 (All versions < V10.46), ETA5 Ethernet Int. 1x100TX IEC61850 Ed.2 (All versions < V03.27), PCCX26 Ax 1703 PE, Contr, Communication Element (All versions < V06.05). The affected devices contain an improper null termination vulnerability while parsing a specific HTTP header. This could allow an attacker to execute code in the context of the current process or lead to denial of service condition.

Weakness: CWE-170 (Improper Null Termination)

## Which versions are affected by CVE-2024-31484?


## How do I fix CVE-2024-31484?

No fix has been published for CVE-2024-31484 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-31484 being exploited?

There is no known exploitation of CVE-2024-31484 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-31484 and fix it if it is affected.

What it is: CVE-2024-31484 is a high-severity vulnerability in Siemens CPC80 Central Processing/Communication, published on 14 May 2024. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2024-31484 in the wild and no public exploit code.

Affected product: Siemens CPC80 Central Processing/Communication. 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-2024-31484/ (Markdown: https://insights.sbomify.com/CVE-2024-31484/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-31484
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-31484
- OSV: https://osv.dev/vulnerability/CVE-2024-31484

---
From sbomify Insights: https://insights.sbomify.com/CVE-2024-31484/
Summaries are generated and may contain mistakes; the official description above is the record.