# CVE-2023-48427: Security feature bypass in SINEC INS

> Attackers can intercept credentials and manipulate responses by bypassing certificate validation, potentially escalating privileges in Siemens SINEC INS.

- **Severity:** High 8.1 (`CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 12 Dec 2023
- **Updated:** 25 Nov 2024
- **Also known as:** GHSA-ffrg-8pgr-8693

## What is CVE-2023-48427?

CVE-2023-48427 is a high-severity vulnerability in Siemens SINEC INS, published on 12 Dec 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A vulnerability has been identified in SINEC INS (All versions < V1.0 SP2 Update 2). Affected products do not properly validate the certificate of the configured UMC server. This could allow an attacker to intercept credentials that are sent to the UMC server as well as to manipulate responses, potentially allowing an attacker to escalate privileges.

Weakness: CWE-295 (Improper Certificate Validation)

## Which versions are affected by CVE-2023-48427?

It affects 1 product.


Products: Siemens Sinec Ins.

## How do I fix CVE-2023-48427?

No fix has been published for CVE-2023-48427 yet. Limit exposure of the affected software until one is available.

## Is CVE-2023-48427 being exploited?

There is no known exploitation of CVE-2023-48427 in the wild and no public exploit code.

## Other vulnerabilities in Siemens SINEC INS

- [CVE-2022-45092](https://insights.sbomify.com/CVE-2022-45092/): Path traversal in SINEC INS (critical 9.9)
- [CVE-2024-46888](https://insights.sbomify.com/CVE-2024-46888/): Path traversal in SINEC INS (critical 9.4)
- [CVE-2024-46890](https://insights.sbomify.com/CVE-2024-46890/): Command injection in SINEC INS (critical 9.4)
- [CVE-2026-46746](https://insights.sbomify.com/CVE-2026-46746/): Command injection in SINEC INS (high 8.7)
- [CVE-2026-46748](https://insights.sbomify.com/CVE-2026-46748/): Privilege escalation in SINEC INS (high 8.7)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2023-48427 and fix it if it is affected.

What it is: CVE-2023-48427 is a high-severity vulnerability in Siemens SINEC INS, published on 12 Dec 2023. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2023-48427 in the wild and no public exploit code.

Affected product: Siemens SINEC INS. 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-2023-48427/ (Markdown: https://insights.sbomify.com/CVE-2023-48427/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2023-48427
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2023-48427
- OSV: https://osv.dev/vulnerability/CVE-2023-48427

---
From sbomify Insights: https://insights.sbomify.com/CVE-2023-48427/
Summaries are generated and may contain mistakes; the official description above is the record.