CVE-2017-7898
An Improper Restriction of Excessive Authentication Attempts issue was discovered in Rockwell Automation Allen-Bradley MicroLogix 1100 programmable-logic controllers 1763-L16AWA, Series A and B, Version 16.00 and prior versions; 1763-L16BBB, Series A…
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (5.15%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
An Improper Restriction of Excessive Authentication Attempts issue was discovered in Rockwell Automation Allen-Bradley MicroLogix 1100 programmable-logic controllers 1763-L16AWA, Series A and B, Version 16.00 and prior versions; 1763-L16BBB, Series A and B, Version 16.00 and prior versions; 1763-L16BWA, Series A and B, Version 16.00 and prior versions; and 1763-L16DWD, Series A and B, Version 16.00 and prior versions and Allen-Bradley MicroLogix 1400 programmable logic controllers 1766-L32AWA, Series A and B, Version 16.00 and prior versions; 1766-L32BWA, Series A and B, Version 16.00 and prior versions; 1766-L32BWAA, Series A and B, Version 16.00 and prior versions; 1766-L32BXB, Series A and B, Version 16.00 and prior versions; 1766-L32BXBA, Series A and B, Version 16.00 and prior versions; and 1766-L32AWAA, Series A and B, Version 16.00 and prior versions. There are no penalties for repeatedly entering incorrect passwords.
- CVSS 3.1
- 9.8 CRITICALCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- EPSS
- 5.15% probability · 92th percentile
- Public exploits
- None in Exploit-DB
- CISA KEV
- Not listed
- Weakness
- CWE-307
- Affected
- rockwellautomation/1763-l16awa series a · rockwellautomation/1763-l16awa series b · rockwellautomation/1763-l16bbb series a · rockwellautomation/1763-l16bbb series b · rockwellautomation/1763-l16bwa series a · rockwellautomation/1763-l16bwa series b · rockwellautomation/1763-l16dwd series a · rockwellautomation/1763-l16dwd series b · rockwellautomation/1766-l32awa series a · rockwellautomation/1766-l32awa series b · rockwellautomation/1766-l32awaa series a · rockwellautomation/1766-l32awaa series b · rockwellautomation/1766-l32bwa series a · rockwellautomation/1766-l32bwa series b · rockwellautomation/1766-l32bwaa series a · rockwellautomation/1766-l32bwaa series b · rockwellautomation/1766-l32bxb series a · rockwellautomation/1766-l32bxb series b · rockwellautomation/1766-l32bxba series a · rockwellautomation/1766-l32bxba series b
- Source
- ics-cert@hq.dhs.gov
EPSS 5.2% since 27 October 2026; no change recorded yet. The dashed line is the ten per cent mark our analysts treat as “patch before the next change window”. Points are recorded when the score first appears and whenever it moves by a percentage point or more.
References
- http://www.securitytracker.com/id/1038546
- https://ics-cert.us-cert.gov/advisories/ICSA-17-115-04Patch, Third Party Advisory, US Government Resource
- http://www.securitytracker.com/id/1038546
- https://ics-cert.us-cert.gov/advisories/ICSA-17-115-04Patch, Third Party Advisory, US Government Resource
Source: NVD record, EPSS from FIRST.org, KEV from CISA, exploits from Exploit-DB. Refreshed daily. Download this record as JSON.