CVE-2017-16740
A Buffer Overflow issue was discovered in Rockwell Automation Allen-Bradley MicroLogix 1400 Controllers, Series B and C Versions 21.002 and earlier.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (7.20%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
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.
- CVSS 3.0
- 10.0 CRITICALCVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- EPSS
- 7.20% probability · 94th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-120, CWE-119
- Affected
- rockwellautomation/1766-l32bxba firmware · rockwellautomation/1766-l32awa firmware · rockwellautomation/1766-l32bxb firmware · rockwellautomation/1766-l32bwaa firmware · rockwellautomation/1766-l32awaa firmware · rockwellautomation/1766-l32bwa firmware
- Source
- ics-cert@hq.dhs.gov
EPSS moved from 11.2% on 21 September 2026 to 7.2% on 27 October 2026. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”.
References
- http://www.securityfocus.com/bid/102474Mitigation, Third Party Advisory, VDB Entry
- https://ics-cert.us-cert.gov/advisories/ICSA-18-009-01Third Party Advisory, US Government Resource
- https://rockwellautomation.custhelp.com/app/answers/detail/a_id/1070883
- http://www.securityfocus.com/bid/102474Mitigation, Third Party Advisory, VDB Entry
- https://ics-cert.us-cert.gov/advisories/ICSA-18-009-01Third Party Advisory, US Government Resource
- https://rockwellautomation.custhelp.com/app/answers/detail/a_id/1070883
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.