CVE-2021-22681
Rockwell Multiple Products Insufficient Protected Credentials Vulnerability
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.
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable. Deadline for federal agencies: 2026-03-26.
6 articles across 6 outlets · first covered Aug 2, 2026 · latest Aug 2, 2026
Coverage timeline
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Rockwell PLC CVE-2021-22681 exploited in the wild, risk to plantswww.securityweek.com · Mar 6, 2026
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KEV adds CVE-2017-7921 and CVE-2021-22681 patch due by 26 Marsocradar.io · Mar 6, 2026
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CISA Adds CVEs to KEV for Apple Rockwell and Hikvision Flawssecurityaffairs.com · Mar 6, 2026
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CISA flags CVE-2017-7921 CVE-2021-22681 amid Hikvision exploitsthehackernews.com · Mar 6, 2026
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Rockwell CVE-2021-22681 risks unauthorised Logix accesswww.cisa.gov · Mar 5, 2026
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Rockwell CVE-2021-22681: Active exploit targets Logix systemscisa.gov · Mar 5, 2026