# CVE-2021-27462: Rockwell Automation FactoryTalk AssetCentre Deserialization of Untrusted Data

> Remote unauthenticated attackers can execute arbitrary commands via deserialization in Rockwell Automation FactoryTalk AssetCentre.

- **Severity:** Critical 10.0 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 23 Mar 2022
- **Updated:** 16 Apr 2025
- **Also known as:** GHSA-qhg7-hg3p-3hfq

## What is CVE-2021-27462?

CVE-2021-27462 is a critical unsafe deserialization vulnerability in Rockwell Automation FactoryTalk AssetCentre, published on 23 Mar 2022. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

A deserialization vulnerability exists in how the AosService.rem service in Rockwell Automation FactoryTalk AssetCentre v10.00 and earlier verifies serialized data. This vulnerability may allow a remote, unauthenticated attacker to execute arbitrary commands in FactoryTalk AssetCentre.

Weakness: CWE-502 (Deserialization of Untrusted Data)

## Which versions are affected by CVE-2021-27462?

It affects 1 product.


Products: Rockwellautomation Factorytalk Assetcentre.

## How do I fix CVE-2021-27462?

No fix has been published for CVE-2021-27462 yet. Limit exposure of the affected software until one is available.

## Is CVE-2021-27462 being exploited?

There is no known exploitation of CVE-2021-27462 in the wild and no public exploit code.

## Other vulnerabilities in Rockwell Automation FactoryTalk AssetCentre

- [CVE-2021-27460](https://insights.sbomify.com/CVE-2021-27460/): Rockwell Automation FactoryTalk AssetCentre Deserialization of Untrusted Data (critical 10.0)
- [CVE-2021-27464](https://insights.sbomify.com/CVE-2021-27464/): Rockwell Automation FactoryTalk AssetCentre SQL Injection (critical 10.0)
- [CVE-2021-27466](https://insights.sbomify.com/CVE-2021-27466/): Rockwell Automation FactoryTalk AssetCentre Deserialization of Untrusted Data (critical 10.0)
- [CVE-2021-27468](https://insights.sbomify.com/CVE-2021-27468/): Rockwell Automation FactoryTalk AssetCentre SQL Injection (critical 10.0)
- [CVE-2021-27470](https://insights.sbomify.com/CVE-2021-27470/): Rockwell Automation FactoryTalk AssetCentre Deserialization of Untrusted Data (critical 10.0)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2021-27462 and fix it if it is affected.

What it is: CVE-2021-27462 is a critical unsafe deserialization vulnerability in Rockwell Automation FactoryTalk AssetCentre, published on 23 Mar 2022. 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-2021-27462 in the wild and no public exploit code.

Affected product: Rockwell Automation FactoryTalk AssetCentre. 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-2021-27462/ (Markdown: https://insights.sbomify.com/CVE-2021-27462/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2021-27462
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-27462
- OSV: https://osv.dev/vulnerability/CVE-2021-27462

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From sbomify Insights: https://insights.sbomify.com/CVE-2021-27462/
Summaries are generated and may contain mistakes; the official description above is the record.