# CVE-2025-12011: CompactLogix ®, ControlLogix ®, Compact GuardLogix ® and GuardLogix ® Buffer Overflow

> Remote attackers can cause a major non-recoverable fault in Rockwell Automation PLCs by loading an invalid project, resulting in denial of service.

- **Severity:** Critical 9.2 (`CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 14 Jul 2026
- **Updated:** 18 Aug 2026
- **Also known as:** GHSA-m6r3-j7p8-mpv6

## What is CVE-2025-12011?

CVE-2025-12011 is a critical denial of service vulnerability in Rockwell Automation CompactLogix® 5370      Compact GuardLogix® 5370      ControlLogix® 5570      GuardLogix® 5570, published on 14 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A denial-of-service issue exists in  5370/5570 controllers. This vulnerability could potentially allow a remote user to load an invalid project, causing the device to enter a major non-recoverable fault (MNRF).

Weakness: CWE-120 (Buffer Copy without Checking Size of Input)

## Which versions are affected by CVE-2025-12011?


## How do I fix CVE-2025-12011?

No fix has been published for CVE-2025-12011 yet. Limit exposure of the affected software until one is available.

## Is CVE-2025-12011 being exploited?

There is no known exploitation of CVE-2025-12011 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2025-12011 and fix it if it is affected.

What it is: CVE-2025-12011 is a critical denial of service vulnerability in Rockwell Automation CompactLogix® 5370      Compact GuardLogix® 5370      ControlLogix® 5570      GuardLogix® 5570, published on 14 Jul 2026. 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-2025-12011 in the wild and no public exploit code.

Affected product: Rockwell Automation CompactLogix® 5370      Compact GuardLogix® 5370      ControlLogix® 5570      GuardLogix® 5570. 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-2025-12011/ (Markdown: https://insights.sbomify.com/CVE-2025-12011/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2025-12011
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2025-12011
- OSV: https://osv.dev/vulnerability/CVE-2025-12011

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From sbomify Insights: https://insights.sbomify.com/CVE-2025-12011/
Summaries are generated and may contain mistakes; the official description above is the record.