# CVE-2025-40580: Memory corruption in SCALANCE LPE9403

> A stack-based buffer overflow in Siemens SCALANCE LPE9403 allows local attackers to execute arbitrary code or cause denial of service.

- **Severity:** Medium 5.4 (`CVSS:4.0/AV:L/AC:H/AT:N/PR:L/UI:P/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 13 May 2025
- **Updated:** 8 Jul 2025
- **Also known as:** GHSA-5hmr-m4pw-7777

## What is CVE-2025-40580?

CVE-2025-40580 is a medium-severity memory corruption vulnerability in Siemens SCALANCE LPE9403, published on 13 May 2025. 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 SCALANCE LPE9403 (6GK5998-3GS00-2AC2) (All versions < V4.0 HF0). Affected devices are vulnerable to a stack-based buffer overflow.
This could allow a non-privileged local attacker to execute arbitrary code on the device or to cause a denial of service condition.

Weakness: CWE-787 (Out-of-bounds Write), CWE-121 (Stack-based Buffer Overflow)

## Which versions are affected by CVE-2025-40580?

It affects 1 product.


Products: Siemens Scalance Lpe9403 Firmware.

## How do I fix CVE-2025-40580?

No fix has been published for CVE-2025-40580 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-40580 being exploited?

There is no known exploitation of CVE-2025-40580 in the wild and no public exploit code.

## Other vulnerabilities in Siemens SCALANCE LPE9403

- [CVE-2023-27407](https://insights.sbomify.com/CVE-2023-27407/): Command injection in SCALANCE LPE9403 (critical 9.9)
- [CVE-2025-27396](https://insights.sbomify.com/CVE-2025-27396/): Privilege escalation in SCALANCE LPE9403 (high 8.7)
- [CVE-2025-27392](https://insights.sbomify.com/CVE-2025-27392/): Command injection in SCALANCE LPE9403 (high 8.6)
- [CVE-2025-27393](https://insights.sbomify.com/CVE-2025-27393/): Command injection in SCALANCE LPE9403 (high 8.6)
- [CVE-2025-27394](https://insights.sbomify.com/CVE-2025-27394/): Command injection in SCALANCE LPE9403 (high 8.6)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-40580 and fix it if it is affected.

What it is: CVE-2025-40580 is a medium-severity memory corruption vulnerability in Siemens SCALANCE LPE9403, published on 13 May 2025. 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-2025-40580 in the wild and no public exploit code.

Affected product: Siemens SCALANCE LPE9403. 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-2025-40580/ (Markdown: https://insights.sbomify.com/CVE-2025-40580/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-40580
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-40580
- OSV: https://osv.dev/vulnerability/CVE-2025-40580

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From sbomify Insights: https://insights.sbomify.com/CVE-2025-40580/
Summaries are generated and may contain mistakes; the official description above is the record.