CVE-2017-16740
CVE-2017-16740 is a critical-severity vulnerability in Rockwellautomation 1766-l32bxba Firmware with a CVSS 3.x base score of 10.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.
Key facts
- Severity: Critical (CVSS 3.x base score 10.0)
- CVSS v2: 7.5
- EPSS exploit prediction: 7% (94th percentile)
- Actively exploited: Not listed in CISA KEV
- Weakness: CWE-119
- Affected product: Rockwellautomation 1766-l32bxba Firmware
- Published:
- Last modified:
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.
Frequently asked questions
- What is 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. The stack-based buffer overflow vulnerability has been identified, which may allow remote code execution.
- How severe is CVE-2017-16740?
- CVE-2017-16740 has a CVSS 3.x base score of 10.0, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
- Is CVE-2017-16740 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (94th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2017-16740?
- CVE-2017-16740 primarily affects Rockwellautomation 1766-l32bxba Firmware. In total, 6 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
- How do I fix CVE-2017-16740?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
- When was CVE-2017-16740 published?
- CVE-2017-16740 was published on 2018-01-09 and last updated on 2026-06-17.
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
Affected products (6)
- cpe:2.3:o:rockwellautomation:1766-l32bxba_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:rockwellautomation:1766-l32awa_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:rockwellautomation:1766-l32bxb_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:rockwellautomation:1766-l32bwaa_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:rockwellautomation:1766-l32awaa_firmware:*:*:*:*:*:*:*:*
- cpe:2.3:o:rockwellautomation:1766-l32bwa_firmware:*:*:*:*:*:*:*:*
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