CVE-2017-16740
No exploitation reported by the sources we read.
- Published2018-01-09
- WeaknessCWE-119 · CWE-120
Am I affected?
Debian, Ubuntu or Red Hat sometimes backport a fix without changing the upstream version number: such a version reads « to verify », never « affected ».With a domain, we read the version its public headers and pages expose. A distribution build can carry the fix under an older number.
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.
Timeline
dates in UTC- 2018-01-0921:29CVE publishedNVD
Observed activity
isMalicious corpus · updated 2026-10-23 18:48 UTCBlock these indicators
- Firewall list (EDL, text): https://api.ismalicious.com/edl/cve/CVE-2017-16740?format=txt
- CSV export: https://api.ismalicious.com/edl/cve/CVE-2017-16740?format=csv
- TAXII collection of exploited CVEs
- The EDL and CSV take an API key on the Pro plan.
Versions per branch
NVD| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 21.2 | ≤ 21.002 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 21.2 | ≤ 21.002 | no fix published | NVD |
| Branch | Affected | Fixed in | Source |
|---|---|---|---|
| 21.2 | ≤ 21.002 | no fix published | NVD |
3 more products in the sources.
as publishedRanges as NVD and OSV publish them; a distribution’s build can be fixed under an older number.
Distribution builds and vendor advisories
Packages from OSV.dev and products from the vendors' CSAF advisories.
version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.
Vendor advisories
Rockwell Automation Allen-Bradley MicroLogix 1400 Controllers
Allen-Bradley MicroLogix 1400 Controllers: 1766-L32AWAA · MicroLogix 1400 Controllers Series B and C: Versions 21.002 and earlier · Allen-Bradley MicroLogix 1400 Controllers: 1766-L32AWA · +4 more
Fix
- Mitigation from the vendor CISA ICSA-18-009-01 · 7 productsRockwell Automation encourages affected users to upgrade to the latest version of available firmware, FRN 21.003
- Mitigation from the vendor CISA ICSA-18-009-01 · 7 productsRockwell Automation also suggests that Modbus TCP can be disabled if it is not necessary in the implementation of the device to mitigate the vulnerability.
- Mitigation from the vendor CISA ICSA-18-009-01 · 7 productsFor more information, Rockwell Automation has released a security bulletin that can be accessed using valid credentials
Advisories and patches
- www.securityfocus.comMitigation
Detection
- Nuclei template
- none so far ProjectDiscovery
- Exploit-DB
- no entry Exploit-DB
- Proof-of-concept repositories
- none listed PoC-in-GitHub
Sources
- NVDCVSS 3.010read 2026-10-23
- NVDCVSS 2.07.5read 2026-10-23
- CNAweakness (CWE)CWE-120read 2026-10-23
- NVDweakness (CWE)CWE-119read 2026-10-23
- FIRST EPSSEPSS score7.2 %2026-10-22
Technical details
- CVSS v3 Vector
- CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- Published
- 2018-01-09
- Last Modified
- 2026-06-17
- NVD status
- Modified
Frequently asked questions
What is CVE-2017-16740?
Is CVE-2017-16740 actively exploited?
What is the CVSS score for CVE-2017-16740?
Running Rockwell Automation? Hear about its next vulnerability
Surveillance reads the versions in your stack — a domain, a lockfile or a list — checks each CVE against the ranges its sources publish, and alerts you when one you run is exploited or enters CISA KEV. A version it cannot read stays « version not verified ».
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Related vulnerabilities
Same product first, then the same vendor advisory and the same publication week.