Is CVE-2021-27471 actively exploited?

No active exploitation of CVE-2021-27471 has been confirmed so far. Continue monitoring, as exploit status can change.

Can CVE-2021-27471 be exploited remotely?

No. CVE-2021-27471 requires local access to exploit.

What is the CVSS score of CVE-2021-27471?

CVE-2021-27471 has a CVSS score of 8.6 (HIGH).

HOME VULNERABILITIESCVE-2021-27471

HIGH

CVE-2021-27471

CWE-22Published: March 23, 2022· Updated: Jun 17, 2026

8.6

CVSS v3.1

Official Description

The parsing mechanism that processes certain file types does not provide input sanitization for file paths. This may allow an attacker to craft malicious files that, when opened by Rockwell Automation Connected Components Workbench v12.00.00 and prior, can traverse the file system. If successfully exploited, an attacker could overwrite existing files and create additional files with the same permissions of the Connected Components Workbench software. User interaction is required for this exploit to be successful.

NVD Source

Technical Analysis

CVE-2021-27471 requires local access, meaning attackers must already have a foothold on the target system.

Exploitation does not require any privileges, though user interaction (Required) is needed, which slightly reduces the risk of mass automated attacks.

A successful exploit results in complete confidentiality breach (data exposure), full integrity compromise (data manipulation), availability disruption (denial of service), with a CVSS base score of 8.6.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.