CVE-2021-22681 — Rockwell Multiple Products Insufficient Protected Credentials Vulnerability
CVE-2021-22681: Rockwell Multiple Products Insufficient Protected Credentials Vulnerability
CISA Known Exploited Vulnerability (KEV)
| Vendor / project | Rockwell |
| Product | Multiple Products |
| Date added | 2026-03-05 |
| Due date | 2026-03-26 |
| Ransomware campaign use | Unknown |
Description
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.
Notes
https://support.rockwellautomation.com/app/answers/answer_view/a_id/1130301/~/cve-2021-22681%3A-authentication-bypass-vulnerability-found-in-logix-controllers- ; https://www.cisa.gov/news-events/ics-advisories/icsa-21-056-03 ; https://nvd.nist.gov/vuln/detail/CVE-2021-22681
References
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2021-22681
- KEV catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog