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Fencer Vulns
critical 9.8

CVE-2017-7899 json

An Information Exposure issue was discovered in Rockwell Automation Allen-Bradley MicroLogix 1100 programmable-logic controllers 1763-L16AW…

published 2017-06-30 9 y ago modified 2026-06-17 4 mo ago also EUVD-2017-16870

cvss
9.8
version 3.0, NVD
cisa kev
Not listed
not in CISA's catalog
epss
4.7%
EPSS 4.7% chance of exploitation in 30 days, percentile 91%
public exploits
0
none known

Summary

An Information Exposure 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. User credentials are sent to the web server using the HTTP GET method, which may result in the credentials being logged. This could make user credentials available for unauthorized retrieval.

Patch / fix

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-17-115-04 updated cvss 3.1

Rockwell Automation Allen-Bradley MicroLogix 1100 and 1400

  • Rockwell Automation 1763-L16AWA Series A and B <= 16.00 Rockwell Automation 1763-L16BBB Series A and B <= 16.00 Rockwell Automation 1763-L16BWA Series A and B <= 16.00 Rockwell Automation 1763-L16DWD Series A and B <= 16.00 Rockwell Automation 1766-L32AWA Series A and B <= 16.00 Rockwell Automation 1766-L32AWAA Series A and B <= 16.00
    +4 more products
    Rockwell Automation 1766-L32BWA Series A and B <= 16.00 Rockwell Automation 1766-L32BWAA Series A and B <= 16.00 Rockwell Automation 1766-L32BXB Series A and B <= 16.00 Rockwell Automation 1766-L32BXBA Series A and B <= 16.00
    affected: mitigation “Rockwell Automation's new firmware version for the Allen-Bradley MicroLogix 1400 Series B controllers, FRN 21.00” rockwellautomation.custhelp.com

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

4.66% chance of exploitation in the next 30 days, higher than 91% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
NVD 3.0 9.8 CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 5.0 AV:N/AC:L/Au:N/C:P/I:N/A:N

Affected products

  • n/a Rockwell Automation Allen-Bradley MicroLogix 1100 and 1400

Classification

Weakness
  • CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.