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CVE-2020-6990

Published: Mar 16, 2020Updated: Jun 3, 2026 Sources: CVE List NVD BDU csafCWE-321
9.8CRITICAL
NVD MITRE
EPSS Score
4.2%
Top 10.2%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
Open in CVSS calculator →

Weaknesses

CWE-321CWE-798

Affected Products

rockwellautomation
commercial·USaka rockwell automation
micrologix 1400 a firmware
ICS / OT / IoT
micrologix 1400 b firmware
ICS / OT / IoT
micrologix 1100 firmware
ICS / OT / IoT
rslogix 500
ICS / OT / IoT
Rockwell Automation Inc.
commercial·USaka thinmanager, guardlogix 5580, rockwell automation arena
Allen Bradley MicroLogix 1400 Series A
ICS / OT / IoT
Allen Bradley MicroLogix 1100
ICS / OT / IoT
RSLogix 500
ICS / OT / IoT
Allen Bradley MicroLogix 1400 Series B
ICS / OT / IoT
and 1 more affected products View all →

Exploitability

Official Patch Available
Is your org exposed to CVE-2020-6990?We can run the check for you — a free external exposure review, no install. Check my exposure

Attack Graph

Products CVE Techniques Tactics

Click technique nodes for MITRE ATT&CK details · drag to pan · Ctrl/⌘ + scroll to zoom, or go fullscreen.

MITRE ATT&CK

2 techniques
Credential Access
Initial Access
View detailed technique mapping

References

https://www.us-cert.gov/ics/advisories/icsa-20-070-06
us-cert.gov
https://www.us-cert.gov/ics/advisories/icsa-20-070-06
us-cert.gov
https://www.cybersecurity-help.cz/vdb/SB2020031124
cybersecurity-help.cz
and 12 more references View all →

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