Rockwell Multiple Products Insufficient Protected Credentials
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 deadline 2026-03-26 · passed 5 months ago · applies to US federal civilian agencies; used elsewhere as a reference SLA
What happened
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.
Who is affected
Rockwell Multiple Products. Affected version ranges are listed in the vendor advisory and the NVD entry linked under Sources.
Weakness class: CWE-522.
Timeline
- Added to CISA KEVExploitation in the wild confirmed by CISA
- CISA remediation deadlinepassed 5 months ago
Sources
- NVD entry for CVE-2021-22681 nvd.nist.gov/vuln/detail/CVE-2021-22681
- CISA Known Exploited Vulnerabilities catalog www.cisa.gov/known-exploited-vulnerabilities-catalog
- support.rockwellautomation.com support.rockwellautomation.com/app/answers/answer_view/a_id/1130301/~/cve-2021-22681%3A-authentication-bypass-vulnerability-found-in-logix-controllers-
- cisa.gov www.cisa.gov/news-events/ics-advisories/icsa-21-056-03
- nvd.nist.gov nvd.nist.gov/vuln/detail/CVE-2021-22681