# CVE-2018-11454: Misconfiguration in SIMATIC STEP 7 (TIA Portal) and WinCC (TIA Portal) V10, V11, V12, SIMATIC STEP 7 (TIA Portal) and WinCC (TIA Portal) V13, SIMATIC STEP 7 (TIA Portal) and WinCC (TIA Portal) V14, SIMATIC STEP 7 (TIA Portal) and WinCC (TIA Portal) V15

> Local attackers can manipulate files due to improper permissions, leading to code execution on target devices when transferred by a victim.

- **Severity:** High 8.6 (`CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H`)
- **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:** 7 Aug 2018
- **Updated:** 16 Sep 2024
- **Also known as:** GHSA-9qvc-rfh7-2xv6

## What is CVE-2018-11454?

CVE-2018-11454 is a high-severity vulnerability in Siemens AG SIMATIC STEP 7 (TIA Portal) and WinCC (TIA Portal) V10, V11, V12, SIMATIC STEP 7 (TIA Portal) and WinCC (TIA Portal) V13, SIMATIC STEP 7 (TIA Portal) and WinCC (TIA Portal) V14, SIMATIC STEP 7 (TIA Portal) and WinCC (TIA Portal) V15, published on 7 Aug 2018. 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 SIMATIC STEP 7 (TIA Portal) and WinCC (TIA Portal) V10, V11, V12 (All versions), SIMATIC STEP 7 (TIA Portal) and WinCC (TIA Portal) V13 (All versions < V13 SP2 Update 2), SIMATIC STEP 7 (TIA Portal) and WinCC (TIA Portal) V14 (All versions < V14 SP1 Update 6), SIMATIC STEP 7 (TIA Portal) and WinCC (TIA Portal) V15 (All versions < V15 Update 2). Improper file permissions in the default installation of TIA Portal may allow an attacker with local file system access to manipulate resources which may be transferred to devices and executed there by a different user. No special privileges are required, but the victim needs to transfer the manipulated files to a device. Execution is caused on the target device rather than on the PG device.

Weakness: CWE-732 (Incorrect Permission Assignment for Critical Resource), CWE-276 (Incorrect Default Permissions)

## Which versions are affected by CVE-2018-11454?

It affects 2 products.


Products: Siemens Simatic Step 7 \(Tia Portal\), Siemens Simatic Wincc \(Tia Portal\).

## How do I fix CVE-2018-11454?

No fix has been published for CVE-2018-11454 yet. Limit exposure of the affected software until one is available.

## Is CVE-2018-11454 being exploited?

There is no known exploitation of CVE-2018-11454 in the wild and no public exploit code.

## Other vulnerabilities in Siemens AG SIMATIC STEP 7 (TIA Portal) and WinCC (TIA Portal) V10, V11, V12, SIMATIC STEP 7 (TIA Portal) and WinCC (TIA Portal) V13, SIMATIC STEP 7 (TIA Portal) and WinCC (TIA Portal) V14, SIMATIC STEP 7 (TIA Portal) and WinCC (TIA Portal) V15

- [CVE-2018-11453](https://insights.sbomify.com/CVE-2018-11453/): Misconfiguration in SIMATIC STEP 7 (TIA Portal) and WinCC (TIA Portal) V10, V11, V12, SIMATIC STEP 7 (TIA Portal) and WinCC (TIA Portal) V13, SIMATIC STEP 7 (TIA Portal) and WinCC (TIA Portal) V14, SIMATIC STEP 7 (TIA Portal) and WinCC (TIA Portal) V15 (high 7.8)
- [CVE-2018-13811](https://insights.sbomify.com/CVE-2018-13811/): Weak cryptography in SIMATIC STEP 7 (TIA Portal) (medium 5.5)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2018-11454 and fix it if it is affected.

What it is: CVE-2018-11454 is a high-severity vulnerability in Siemens AG SIMATIC STEP 7 (TIA Portal) and WinCC (TIA Portal) V10, V11, V12, SIMATIC STEP 7 (TIA Portal) and WinCC (TIA Portal) V13, SIMATIC STEP 7 (TIA Portal) and WinCC (TIA Portal) V14, SIMATIC STEP 7 (TIA Portal) and WinCC (TIA Portal) V15, published on 7 Aug 2018. 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-2018-11454 in the wild and no public exploit code.

Affected product: Siemens AG SIMATIC STEP 7 (TIA Portal) and WinCC (TIA Portal) V10, V11, V12, SIMATIC STEP 7 (TIA Portal) and WinCC (TIA Portal) V13, SIMATIC STEP 7 (TIA Portal) and WinCC (TIA Portal) V14, SIMATIC STEP 7 (TIA Portal) and WinCC (TIA Portal) V15. 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-2018-11454/ (Markdown: https://insights.sbomify.com/CVE-2018-11454/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2018-11454
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2018-11454
- OSV: https://osv.dev/vulnerability/CVE-2018-11454

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From sbomify Insights: https://insights.sbomify.com/CVE-2018-11454/
Summaries are generated and may contain mistakes; the official description above is the record.