# CVE-2025-40818: Information disclosure in SINEMA Remote Connect Server

> An authenticated attacker can read unprotected private SSL/TLS keys, enabling server impersonation, traffic decryption, or unauthorized access.

- **Severity:** Low 3.3 (`CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N`)
- **Exploited in the wild:** Not known
- **Login needed:** Any signed-in user
- **Attackable:** Local or same network only
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 9 Dec 2025
- **Updated:** 9 Dec 2025
- **Also known as:** GHSA-x5gj-xmj6-c2mc

## What is CVE-2025-40818?

CVE-2025-40818 is a low-severity vulnerability in Siemens Sinema Remote Connect Server, published on 9 Dec 2025. 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 SINEMA Remote Connect Server (All versions < V3.2 SP4). Affected applications contain private SSL/TLS keys on the server that are not properly protected allowing any user with server access to read these keys. This could allow an authenticated attacker to impersonate the server potentially enabling man-in-the-middle, traffic decryption or unauthorized access to services that trust these certificates.

Weakness: CWE-732 (Incorrect Permission Assignment for Critical Resource)

## Which versions are affected by CVE-2025-40818?

It affects 1 product.


Products: Siemens Sinema Remote Connect Server.

## How do I fix CVE-2025-40818?

No fix has been published for CVE-2025-40818 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-40818 being exploited?

There is no known exploitation of CVE-2025-40818 in the wild and no public exploit code.

## Other vulnerabilities in Siemens Sinema Remote Connect Server

- [CVE-2022-32257](https://insights.sbomify.com/CVE-2022-32257/): Missing authorization in SINEMA Remote Connect Server (critical 9.8)
- [CVE-2019-13918](https://insights.sbomify.com/CVE-2019-13918/): Auth bypass in SINEMA Remote Connect Server (critical 9.8)
- [CVE-2024-39872](https://insights.sbomify.com/CVE-2024-39872/): Privilege escalation in SINEMA Remote Connect Server (critical 9.3)
- [CVE-2022-32251](https://insights.sbomify.com/CVE-2022-32251/): Missing authorization in SINEMA Remote Connect Server (high 8.8)
- [CVE-2022-32262](https://insights.sbomify.com/CVE-2022-32262/): Command injection in SINEMA Remote Connect Server (high 8.8)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-40818 and fix it if it is affected.

What it is: CVE-2025-40818 is a low-severity vulnerability in Siemens Sinema Remote Connect Server, published on 9 Dec 2025. 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-2025-40818 in the wild and no public exploit code.

Affected product: Siemens Sinema Remote Connect Server. 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-2025-40818/ (Markdown: https://insights.sbomify.com/CVE-2025-40818/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-40818
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-40818
- OSV: https://osv.dev/vulnerability/CVE-2025-40818

---
From sbomify Insights: https://insights.sbomify.com/CVE-2025-40818/
Summaries are generated and may contain mistakes; the official description above is the record.