# CVE-2026-9633: Redundancy Module Configuration Tool - Multiple Vulnerabilities

> Local attackers can escalate privileges to Administrator by placing a malicious DLL in a writable path directory loaded by the configuration tool.

- **Severity:** High 7.0 (`CVSS:4.0/AV:L/AC:L/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:** 1 Sep 2026
- **Updated:** 1 Sep 2026
- **Also known as:** GHSA-f94w-8wrq-px55

## What is CVE-2026-9633?

CVE-2026-9633 is a high-severity vulnerability in Rockwell Automation Redundancy Module Configuration Tool, published on 1 Sep 2026. 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 security issue exists within the Redundancy Module Configuration Tool. The RM3ConfigTool.exe binary searches directories in the system path for a required DLL, and one or more of these directories may be writable by standard (non-administrator) users due to incorrect default permissions. If a local attacker places a malicious DLL in such a directory and an administrator subsequently runs the tool, the malicious DLL is loaded into the elevated process and executes with Administrator/SYSTEM privileges.

Weakness: CWE-276 (Incorrect Default Permissions)

## Which versions are affected by CVE-2026-9633?


## How do I fix CVE-2026-9633?

No fix has been published for CVE-2026-9633 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-9633 being exploited?

There is no known exploitation of CVE-2026-9633 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-9633 and fix it if it is affected.

What it is: CVE-2026-9633 is a high-severity vulnerability in Rockwell Automation Redundancy Module Configuration Tool, published on 1 Sep 2026. 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-2026-9633 in the wild and no public exploit code.

Affected product: Rockwell Automation Redundancy Module Configuration Tool. 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-2026-9633/ (Markdown: https://insights.sbomify.com/CVE-2026-9633/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-9633
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-9633
- OSV: https://osv.dev/vulnerability/CVE-2026-9633

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-9633/
Summaries are generated and may contain mistakes; the official description above is the record.