CVE-2020-6998
MEDIUMRockwell Automation CompactLogix 5370 and ControlLogix 5570 < 33 - Denial of Service via CIP Packet Request
Title source: llmDescription
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.
References (2)
Core 2
Core References
Third Party Advisory, US Government Resource x_refsource_confirm
https://www.cisa.gov/uscert/ics/advisories/icsa-21-061-02
Permissions Required, Vendor Advisory x_refsource_confirm
https://rockwellautomation.custhelp.com/app/answers/answer_view/a_id/1130398
Scores
CVSS v3
5.8
EPSS
0.0049
EPSS Percentile
65.8%
Attack Vector
NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L
CISA SSVC
Vulnrichment
Exploitation
none
Automatable
yes
Technical Impact
partial
Details
CWE
CWE-20
Status
published
Products (9)
rockwellautomation/armor_compact_guardlogix_5370_firmware
< 33
rockwellautomation/compact_guardlogix_5370_firmware
< 33
rockwellautomation/compactlogix_5370_l1_firmware
< 33
rockwellautomation/compactlogix_5370_l2_firmware
< 33
rockwellautomation/compactlogix_5370_l3_firmware
< 33
rockwellautomation/controllogix_5570_firmware
< 33
rockwellautomation/guardlogix_5560_firmware
< 33
rockwellautomation/guardlogix_5570_firmware
< 33
rockwellautomation/guardlogix_5580_firmware
< 33
Published
Jul 27, 2022
Tracked Since
Feb 18, 2026