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VulnerabilityKnown exploitedExploit likelihood 64%
Rockwell Multiple Products Insufficient Protected Credentials Vulnerability
CVE-2021-22681 · CISA KEV · March 5, 2026
Summary
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.
From CISA, quoted as published. Check the source before acting.
What to do
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
CISA required action, quoted.
Affected products
| Vendor | Product |
|---|---|
| Rockwell Automation | Multiple Products |
Why it's on these mode pages
- Maritime: Vendor table: Rockwell (industrial control makers used in every mode, all modes) (matched by rule)
- Pipeline: Vendor table: Rockwell (industrial control makers used in every mode, all modes) (matched by rule)
- Freight rail: Vendor table: Rockwell (industrial control makers used in every mode, all modes) (matched by rule)
- Passenger rail and transit: Vendor table: Rockwell (industrial control makers used in every mode, all modes) (matched by rule)
- Highway and motor carrier: Vendor table: Rockwell (industrial control makers used in every mode, all modes) (matched by rule)
- Postal and parcel: Vendor table: Rockwell (industrial control makers used in every mode, all modes) (matched by rule)
Change history
- November 9, 2026: First collected by Watch
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