What’s Vulnerable › Vulnerabilities

CVE-2016-9343

• Severity: critical (CVSS 10.0 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 10.5% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2017-02-13 · updated 2026-06-17
• Weakness: CWE-787

Description

An issue was discovered in Rockwell Automation Logix5000 Programmable Automation Controller FRN 16.00 through 21.00 (excluding all firmware versions prior to FRN 16.00, which are not affected). By sending malformed common industrial protocol (CIP) packet, an attacker may be able to overflow a stack-based buffer and execute code on the controller or initiate a nonrecoverable fault resulting in a denial of service.

Affected products

• Rockwellautomation 1768 Compact Guardlogix L4Xs Controller Firmware: 18.00, 19.00, 20.00, 20.011, 20.013
• Rockwellautomation 1768 Compactlogix L4X Controller Firmware: 16.00, 16.020, 16.025, 17.00, 18.00, 19.00 (+3)
• Rockwellautomation 1769 Compactlogix 5370 L1 Controller Firmware: 20.00, 20.010, 20.013, 21.00
• Rockwellautomation 1769 Compactlogix 5370 L2 Controller Firmware: 20.00, 20.010, 20.013, 21.00
• Rockwellautomation 1769 Compactlogix 5370 L3 Controller Firmware: 20.00, 20.010, 20.013, 21.00
• Rockwellautomation 1769 Compactlogix L23X Controller Firmware: 16.00, 17.00, 18.00, 19.00, 20.00, 20.010 (+1)
• Rockwellautomation 1769 Compactlogix L3X Controller Firmware: 16.00, 16.020, 16.023, 17.00, 18.00, 19.00 (+3)
• Rockwellautomation Controllogix 5560 Controller Firmware: 16.00, 16.020, 16.022, 17.00, 18.00, 19.00 (+3)
• Rockwellautomation Controllogix 5560 Redundant Controller Firmware: 16.00, 19.00, 20.00, 20.050, 20.055
• Rockwellautomation Controllogix 5570 Controller Firmware: 18.00, 19.00, 20.010, 20.013, 21.00
• Rockwellautomation Controllogix 5570 Redundant Controller Firmware: 20.00, 20.050, 20.055, 21.00
• Rockwellautomation Controllogix L55 Controller Firmware: 16.00, 16.020, 16.022
• Rockwellautomation Flexlogix L34 Controller Firmware: 16.00
• Rockwellautomation Guardlogix 5570 Controller Firmware: 16.00, 17.00, 18.00, 19.00, 20.00, 20.010 (+2)
• Rockwellautomation Rslogix Emulate 5000 Firmware: 18.00, 19.00, 20.00, 21.00
• Rockwellautomation Softlogix 5800 Controller Firmware: 18.00, 19.00, 20.00, 21.00

References

• http://www.securityfocus.com/bid/95304
• https://ics-cert.us-cert.gov/advisories/ICSA-16-343-05
• http://www.securityfocus.com/bid/95304
• https://ics-cert.us-cert.gov/advisories/ICSA-16-343-05

Get alerted when CVE-2016-9343 or the next vulnerability affects your stack