CriticalCVECISA — Known Exploited Vulnerabilities· 5 Mar 2026

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

Severity: Critical · Kind: Vulnerability

What it is

AI offline placeholder summary for: Title: CVE-2021-22681 — Rockwell Multiple Products Insufficient Protected Creden.

Who this affects

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What to do

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From the source

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

Vulnerability facts

CVE
CVE-2021-22681
On CISA KEV since
2026-03-05
Ransomware use
Unknown

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Plain-English summaries are AI-generated and reviewed for tone, not technical accuracy. For incident response, always rely on the original source linked above.