CVE-2021-27466 Rockwell Automation FactoryTalk AssetCentre Deserialization of Untrusted Data

Critical 10.0 Published 23 Mar 2022 Updated 16 Apr 2025

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

Exploited in the wild: Not known
Login needed: Not needed
Attackable: Over the internet
Victim action needed: Not needed
Fix: None listed

What is CVE-2021-27466?

CVE-2021-27466 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 ArchiveService.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

Which versions are affected by CVE-2021-27466?

It affects 1 product.

Products include Rockwellautomation Factorytalk Assetcentre.

How do I fix CVE-2021-27466?

No fix has been published for CVE-2021-27466 yet. Limit exposure of the affected software until one is available.

Upgrade, and only deserialise data from trusted sources or with an allow-list of types. More about Unsafe deserialization.

Is CVE-2021-27466 being exploited?

There is no known exploitation of CVE-2021-27466 in the wild and no public exploit code.

Sources

Also known as GHSA-9r5x-crjw-6ghj.