CVE-2021-27466

Name: CVE-2021-27466
Creator: NVD / NIST
Published: 2022-03-23T20:15:08.877+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

CRITICALCVSS 9.8/10EPSS 3.74%

Last modified Jun 17, 2026

CVE-2021-27466 is a critical-severity vulnerability rated 9.8/10 on the CVSS scale. 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.. EPSS estimates a 3.74% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1

9.8/10

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

3.74%

88.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Rockwellautomation	Factorytalk Assetcentre	<= 10.00

References

https://idp.rockwellautomation.com/adfs/ls/idpinitiatedsignon.aspx?RelayState=RPID%3Drockwellautomation.custhelp.com%26RelayState%3Danswers%2Fanswer_view%2Fa_id%2F1130831Permissions Required, Vendor Advisory
https://www.cisa.gov/uscert/ics/advisories/icsa-21-091-01Third Party Advisory, US Government Resource
https://idp.rockwellautomation.com/adfs/ls/idpinitiatedsignon.aspx?RelayState=RPID%3Drockwellautomation.custhelp.com%26RelayState%3Danswers%2Fanswer_view%2Fa_id%2F1130831Permissions Required, Vendor Advisory
https://www.cisa.gov/uscert/ics/advisories/icsa-21-091-01Third Party Advisory, US Government Resource

Timeline

Published: Mar 23, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2021-27466?

How severe is CVE-2021-27466?

CVE-2021-27466 has a CVSS score of 9.8/10 (CRITICAL severity). The EPSS model estimates a 3.74% probability of exploitation in the next 30 days.

How do I fix CVE-2021-27466?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2021-27466?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST