CVE-2021-27473

Name: CVE-2021-27473
Creator: NVD / NIST
Published: 2022-03-23T20:15:09.153+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.2/10EPSS 0.75%

Last modified Jun 17, 2026

CVE-2021-27473 is a high-severity vulnerability rated 8.2/10 on the CVSS scale. Rockwell Automation Connected Components Workbench v12.00.00 and prior does not sanitize paths specified within the .ccwarc archive file during extraction. This type of vulnerability is also commonly referred to as a Zip Slip. EPSS estimates a 0.75% chance of exploitation in the next 30 days.

Description

Rockwell Automation Connected Components Workbench v12.00.00 and prior does not sanitize paths specified within the .ccwarc archive file during extraction. This type of vulnerability is also commonly referred to as a Zip Slip. A local, authenticated attacker can create a malicious .ccwarc archive file that, when opened by Connected Components Workbench, will allow the attacker to gain the privileges of the software. If the software is running at SYSTEM level, the attacker will gain admin level privileges. User interaction is required for this exploit to be successful.

Metrics

CVSS 3.1

8.2/10

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

EPSS Probability

0.75%

50.3th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Rockwellautomation	Connected Components Workbench	<= 12.00.00

References

https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1131435Permissions Required, Vendor Advisory
https://www.cisa.gov/uscert/ics/advisories/icsa-21-133-01Third Party Advisory, US Government Resource
https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1131435Permissions Required, Vendor Advisory
https://www.cisa.gov/uscert/ics/advisories/icsa-21-133-01Third Party Advisory, US Government Resource

Timeline

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

Frequently Asked Questions

What is CVE-2021-27473?

How severe is CVE-2021-27473?

CVE-2021-27473 has a CVSS score of 8.2/10 (HIGH severity). The EPSS model estimates a 0.75% probability of exploitation in the next 30 days.

How do I fix CVE-2021-27473?

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-2021-27473?

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

Scan your code now

Source: NVD / NIST