# CVE-2024-53832: Information disclosure in CPCI85 Central Processing/Communication

> An attacker with physical access can observe SPI bus traffic to extract secure element passwords and decrypt firmware updates.

- **Severity:** Medium 5.1 (`CVSS:4.0/AV:P/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/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:** Not needed
- **Fix available:** No
- **Published:** 10 Dec 2024
- **Updated:** 3 Nov 2025
- **Also known as:** GHSA-pg55-3wrh-jwh5

## What is CVE-2024-53832?

CVE-2024-53832 is a medium-severity vulnerability in Siemens CPCI85 Central Processing/Communication, published on 10 Dec 2024. It can only be exploited from the same machine or local network, with no action from the victim.

### Official description

A vulnerability has been identified in CPCI85 Central Processing/Communication (All versions < V05.30). The affected devices contain a secure element which is connected via an unencrypted SPI bus. This could allow an attacker with physical access to the SPI bus to observe the password used for the secure element authentication, and then use the secure element as an oracle to decrypt all encrypted update files.

Weakness: CWE-522 (Insufficiently Protected Credentials)

## Which versions are affected by CVE-2024-53832?


## How do I fix CVE-2024-53832?

No fix has been published for CVE-2024-53832 yet. Limit exposure of the affected software until one is available.

## Is CVE-2024-53832 being exploited?

There is no known exploitation of CVE-2024-53832 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2024-53832 and fix it if it is affected.

What it is: CVE-2024-53832 is a medium-severity vulnerability in Siemens CPCI85 Central Processing/Communication, published on 10 Dec 2024. 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-2024-53832 in the wild and no public exploit code.

Affected product: Siemens CPCI85 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-2024-53832/ (Markdown: https://insights.sbomify.com/CVE-2024-53832/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2024-53832
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2024-53832
- OSV: https://osv.dev/vulnerability/CVE-2024-53832

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From sbomify Insights: https://insights.sbomify.com/CVE-2024-53832/
Summaries are generated and may contain mistakes; the official description above is the record.