What’s Vulnerable › Vulnerabilities

CVE-2020-6984

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.8% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2020-03-16 · updated 2026-06-17
• Weakness: CWE-327

Description

Rockwell Automation MicroLogix 1400 Controllers Series B v21.001 and prior, Series A, all versions, MicroLogix 1100 Controller, all versions, RSLogix 500 Software v12.001 and prior, The cryptographic function utilized to protect the password in MicroLogix is discoverable.

Affected products

• Rockwell Automation MicroLogix 1100: all versions
• Rockwellautomation Micrologix 1400 A Firmware: all versions
• Rockwellautomation Micrologix 1400 B Firmware: through 21.001
• Rockwell Automation RSLogix 500®: through 12.001

References

• https://www.us-cert.gov/ics/advisories/icsa-20-070-06
• https://www.us-cert.gov/ics/advisories/icsa-20-070-06

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