What’s Vulnerable › Vulnerabilities

CVE-2017-16740

• Severity: critical (CVSS 10.0 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 7.2% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2018-01-09 · updated 2026-06-17
• Weakness: CWE-120

Description

A Buffer Overflow issue was discovered in Rockwell Automation Allen-Bradley MicroLogix 1400 Controllers, Series B and C Versions 21.002 and earlier. The stack-based buffer overflow vulnerability has been identified, which may allow remote code execution.

Affected products

• Rockwellautomation 1766-L32Awa Firmware: through 21.002
• Rockwellautomation 1766-L32Awaa Firmware: through 21.002
• Rockwellautomation 1766-L32Bwa Firmware: through 21.002
• Rockwellautomation 1766-L32Bwaa Firmware: through 21.002
• Rockwellautomation 1766-L32Bxb Firmware: through 21.002
• Rockwellautomation 1766-L32Bxba Firmware: through 21.002

References

• http://www.securityfocus.com/bid/102474
• https://ics-cert.us-cert.gov/advisories/ICSA-18-009-01
• https://rockwellautomation.custhelp.com/app/answers/detail/a_id/1070883
• http://www.securityfocus.com/bid/102474
• https://ics-cert.us-cert.gov/advisories/ICSA-18-009-01
• https://rockwellautomation.custhelp.com/app/answers/detail/a_id/1070883

Get alerted when CVE-2017-16740 or the next vulnerability affects your stack