# CVE-2021-22681: A Rockwell (several products) bug is being used in attacks

Status: Being used now (CISA KEV, added 2026-03-05)
Who: 
Do this: 

## Agent prompt (read-only)
Read-only check, change nothing, send nothing anywhere.
Is Rockwell Multiple Products (CVE-2021-22681) installed or running on this machine or in this project?
1. Find every copy and its version (apps, packages, containers, lockfiles).
2. Compare each version against the vendor's fixed version for CVE-2021-22681. Quote the vendor page you used.
3. Report a table: where, version, fixed version, status (exposed / fixed / not installed / unsure).
4. List the exact update steps, but do not run them.

## Official 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.

## Sources
- 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
- https://nvd.nist.gov/vuln/detail/CVE-2021-22681

Generated by isitexploited.org from public sources. Verify version numbers against the vendor before acting.