Vulnerability Monitor

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CVE-2020-6998


The connection establishment algorithm found in Rockwell Automation CompactLogix 5370 and ControlLogix 5570 versions 33 and prior does not sufficiently manage its control flow during execution, creating an infinite loop. This may allow an attacker to send specially crafted CIP packet requests to a controller, which may cause denial-of-service conditions in communications with other products.


Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 5.8, indicating it can be exploited remotely over the network with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts and limited availability for affected systems. Impacting 18 products from rockwellautomation, from rockwellautomation, from rockwellautomation and 15 others, organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2022, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.


Published

2022-07-27T21:15:08.297

Last Modified

2025-04-17T16:15:21.730

Status

Modified

Source

[email protected]

Severity

CVSSv3.1: 5.8 (MEDIUM)

Weaknesses
  • Type: Primary
    CWE-20
  • Type: Secondary
    CWE-20

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System rockwellautomation armor_compact_guardlogix_5370_firmware ≤ 33 Yes
Hardware rockwellautomation armor_compact_guardlogix_5370 - No
Operating System rockwellautomation compact_guardlogix_5370_firmware ≤ 33 Yes
Hardware rockwellautomation compact_guardlogix_5370 - No
Operating System rockwellautomation compactlogix_5370_l1_firmware ≤ 33 Yes
Hardware rockwellautomation compactlogix_5370_l1 - No
Operating System rockwellautomation compactlogix_5370_l2_firmware ≤ 33 Yes
Hardware rockwellautomation compactlogix_5370_l2 - No
Operating System rockwellautomation compactlogix_5370_l3_firmware ≤ 33 Yes
Hardware rockwellautomation compactlogix_5370_l3 - No
Operating System rockwellautomation controllogix_5570_firmware ≤ 33 Yes
Hardware rockwellautomation controllogix_5570 - No
Operating System rockwellautomation guardlogix_5560_firmware ≤ 33 Yes
Hardware rockwellautomation guardlogix_5560 - No
Operating System rockwellautomation guardlogix_5570_firmware ≤ 33 Yes
Hardware rockwellautomation guardlogix_5570 - No
Operating System rockwellautomation guardlogix_5580_firmware ≤ 33 Yes
Hardware rockwellautomation guardlogix_5580 - No

References

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For rockwellautomation's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.