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CVE-2021-22681: Rockwell Multiple Products Insufficient Protected Credentials Vulnerability

Rockwell Multiple Products · in CISA KEV since 2026-03-05

2026-03-05added to KEV

2026-03-26federal remediation due date

63.63%EPSS exploit probability (30 days) 99.2th percentile

9.8 CRITICALCVSS 3.1

Unknownknown ransomware use

1,828days from NVD publication to KEV

What it is

Multiple Rockwell products contain an insufficient protected credentials vulnerability. Studio 5000 Logix Designer software may allow a key to be discovered. This key is used to verify Logix controllers are communicating with Rockwell Automation design software. If successfully exploited, this vulnerability could allow an unauthorized application to connect with Logix controllers. To leverage this vulnerability, an unauthorized user would require network access to the controller.

Required action (CISA)

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

CWE	CWE-522
CVSS vector	`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`
NVD published	2021-03-03 (Analyzed)

Original records: NVD · CISA KEV · JSON: /api/cve/CVE-2021-22681.json · all KEV CVEs

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