Rockwell Automation CompactLogix 5370 and ControlLogix 5570 Controllers Improper Input Validation
Priority MEDIUM 49CWE-20Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- —
- Confidentiality · integrity · availability
- None · None · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA.
Summary
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.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.0316 88th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| Rockwell | Armor Compact GuardLogix 5370 controllers | up to versions 33 and prior | — | No fix listed | CNA |
| Rockwell | Armor GuardLogix Safety Controllers | up to versions 33 and prior | — | No fix listed | CNA |
| Rockwell | CompactLogix 5370 L1 controllers | up to versions 33 and prior | — | No fix listed | CNA |
| Rockwell | CompactLogix 5370 L2 controllers | up to versions 33 and prior | — | No fix listed | CNA |
| Rockwell | CompactLogix 5370 L3 controllers | up to versions 33 and prior | — | No fix listed | CNA |
| Rockwell | Compact GuardLogix 5370 controllers | up to versions 33 and prior | — | No fix listed | CNA |
| Rockwell | ControlLogix 5570 controllers | up to versions 33 and prior | — | No fix listed | CNA |
- Armor Compact GuardLogix 5370 controllers VendorRockwell Affected up to versions 33 and prior Fixed in — No fix listed CNA
- Armor GuardLogix Safety Controllers VendorRockwell Affected up to versions 33 and prior Fixed in — No fix listed CNA
- CompactLogix 5370 L1 controllers VendorRockwell Affected up to versions 33 and prior Fixed in — No fix listed CNA
- CompactLogix 5370 L2 controllers VendorRockwell Affected up to versions 33 and prior Fixed in — No fix listed CNA
- CompactLogix 5370 L3 controllers VendorRockwell Affected up to versions 33 and prior Fixed in — No fix listed CNA
- Compact GuardLogix 5370 controllers VendorRockwell Affected up to versions 33 and prior Fixed in — No fix listed CNA
- ControlLogix 5570 controllers VendorRockwell Affected up to versions 33 and prior Fixed in — No fix listed CNA
CPE configurations NVD · 18
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:rockwellautomation:armor_compact_guardlogix_5370_firmware:*:*:*:*:*:*:*:* | up to 33 | Vulnerable | Rockwell |
| cpe:2.3:h:rockwellautomation:armor_compact_guardlogix_5370:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Rockwell |
| cpe:2.3:o:rockwellautomation:compact_guardlogix_5370_firmware:*:*:*:*:*:*:*:* | up to 33 | Vulnerable | Rockwell |
| cpe:2.3:h:rockwellautomation:compact_guardlogix_5370:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Rockwell |
| cpe:2.3:o:rockwellautomation:compactlogix_5370_l1_firmware:*:*:*:*:*:*:*:* | up to 33 | Vulnerable | Rockwell |
| cpe:2.3:h:rockwellautomation:compactlogix_5370_l1:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Rockwell |
| cpe:2.3:o:rockwellautomation:compactlogix_5370_l2_firmware:*:*:*:*:*:*:*:* | up to 33 | Vulnerable | Rockwell |
| cpe:2.3:h:rockwellautomation:compactlogix_5370_l2:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Rockwell |
| cpe:2.3:o:rockwellautomation:compactlogix_5370_l3_firmware:*:*:*:*:*:*:*:* | up to 33 | Vulnerable | Rockwell |
| cpe:2.3:h:rockwellautomation:compactlogix_5370_l3:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Rockwell |
- cpe:2.3:o:rockwellautomation:armor_compact_guardlogix_5370_firmware:*:*:*:*:*:*:*:* Versions up to 33 Vulnerable ·Rockwell
- cpe:2.3:h:rockwellautomation:armor_compact_guardlogix_5370:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Rockwell
- cpe:2.3:o:rockwellautomation:compact_guardlogix_5370_firmware:*:*:*:*:*:*:*:* Versions up to 33 Vulnerable ·Rockwell
- cpe:2.3:h:rockwellautomation:compact_guardlogix_5370:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Rockwell
- cpe:2.3:o:rockwellautomation:compactlogix_5370_l1_firmware:*:*:*:*:*:*:*:* Versions up to 33 Vulnerable ·Rockwell
- cpe:2.3:h:rockwellautomation:compactlogix_5370_l1:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Rockwell
- cpe:2.3:o:rockwellautomation:compactlogix_5370_l2_firmware:*:*:*:*:*:*:*:* Versions up to 33 Vulnerable ·Rockwell
- cpe:2.3:h:rockwellautomation:compactlogix_5370_l2:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Rockwell
- cpe:2.3:o:rockwellautomation:compactlogix_5370_l3_firmware:*:*:*:*:*:*:*:* Versions up to 33 Vulnerable ·Rockwell
- cpe:2.3:h:rockwellautomation:compactlogix_5370_l3:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Rockwell
Show 8 more CPE
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:o:rockwellautomation:controllogix_5570_firmware:*:*:*:*:*:*:*:* | up to 33 | Vulnerable | Rockwell |
| cpe:2.3:h:rockwellautomation:controllogix_5570:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Rockwell |
| cpe:2.3:o:rockwellautomation:guardlogix_5560_firmware:*:*:*:*:*:*:*:* | up to 33 | Vulnerable | Rockwell |
| cpe:2.3:h:rockwellautomation:guardlogix_5560:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Rockwell |
| cpe:2.3:o:rockwellautomation:guardlogix_5570_firmware:*:*:*:*:*:*:*:* | up to 33 | Vulnerable | Rockwell |
| cpe:2.3:h:rockwellautomation:guardlogix_5570:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Rockwell |
| cpe:2.3:o:rockwellautomation:guardlogix_5580_firmware:*:*:*:*:*:*:*:* | up to 33 | Vulnerable | Rockwell |
| cpe:2.3:h:rockwellautomation:guardlogix_5580:-:*:*:*:*:*:*:* | not specified by NVD | Running on | Rockwell |
- cpe:2.3:o:rockwellautomation:controllogix_5570_firmware:*:*:*:*:*:*:*:* Versions up to 33 Vulnerable ·Rockwell
- cpe:2.3:h:rockwellautomation:controllogix_5570:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Rockwell
- cpe:2.3:o:rockwellautomation:guardlogix_5560_firmware:*:*:*:*:*:*:*:* Versions up to 33 Vulnerable ·Rockwell
- cpe:2.3:h:rockwellautomation:guardlogix_5560:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Rockwell
- cpe:2.3:o:rockwellautomation:guardlogix_5570_firmware:*:*:*:*:*:*:*:* Versions up to 33 Vulnerable ·Rockwell
- cpe:2.3:h:rockwellautomation:guardlogix_5570:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Rockwell
- cpe:2.3:o:rockwellautomation:guardlogix_5580_firmware:*:*:*:*:*:*:*:* Versions up to 33 Vulnerable ·Rockwell
- cpe:2.3:h:rockwellautomation:guardlogix_5580:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Rockwell
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2020-6998
- 2026-10-03 Alias added: GHSA-9r87-pc5m-9w97
References
More Rockwell Armor Compact Guardlogix 5370 Firmware vulnerabilities
- TI-2019-08171 Rockwell Automation CompactLogix 5370 Uncontrolled Resource Consumption CVSS 3.1CRITICAL 9.8
- TI-2019-08173 Rockwell Automation CompactLogix 5370 Stack-based Buffer Overflow CVSS 3.1HIGH 7.5
Sources
- CVE-2020-6998 · CVE Program
- CVE-2020-6998 · NVD
- FIRST EPSS
- GHSA-9r87-pc5m-9w97 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences