CVE•Published 2020-03-16•Modified 2026-06-03•1 article on news•5 live references•NVD data
CVE-2020-6990Rockwellautomation · Micrologix_1400_a_firmware
Vulnerability data via NVD (ingested)
CVSS v3.1
9.8
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
EPSS percentile
34
Exploit Prediction Scoring System · top 66% of all CVEs
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 key utilized to help protect the account password is hard coded into the RSLogix 500 binary file. An attacker could identify cryptographic keys and use it for further cryptographic attacks that could ultimately lead to a remote attacker gaining unauthorized access to the controller.
Timeline
Published 2020-03-16
Modified 2026-06-03
External references
Search for exposed instances
Shodan + Censys queries derived from NVD's CPE data. The vuln tag catches assets Shodan has explicitly linked to this CVE; the product / banner fingerprints find exposed instances even when the vuln tag was never applied (which is common).
Shodan · vuln tag0 hosts
vuln:CVE-2020-6990Hosts Shodan has explicitly fingerprinted as vulnerable.
Shodan · OS
os:"Micrologix 1400 A Firmware"Hosts Shodan identified as running Micrologix 1400 A Firmware.
More intel sources (5)
Shodan report
vuln:CVE-2020-6990Country / ASN / product breakdown for the vuln query.
Censys
vulnerabilities.cve_id: CVE-2020-6990Censys host search filtered to this CVE id.
grep.app
CVE-2020-6990Public source-code mentions — fast PoC discovery.
GitHub code
CVE-2020-6990GitHub code search for direct mentions.
Google dork
"CVE-2020-6990" exploit -site:nvd.nist.govWrite-ups and news, NVD excluded.