How severe is CVE-2016-9338?

Low severity. CVSS v3 base score is 2.7 out of 10.

Vulnerability in Rockwellautomation 1763-L16awa Series A

CVE-2016-9338

An issue was discovered in Rockwell Automation Allen-Bradley MicroLogix 1100 controller 1763-L16AWA, Series A and B, Version 14.000 and prior versions; 1763-L16BBB, Series A and B, Version 14.000 and prior versions; 1763-L16BWA, Series A and B, Version 14.000 and prior versions; and 1763-L16DWD, Series A and B, Version 14.000 and prior versions. Because of an Incorrect Permission Assignment for Critical Resource, users with administrator privileges may be able to remove all administrative users requiring a factory reset to restore ancillary web server function. Exploitation of this vulnerability will still allow the affected device to function in its capacity as a controller.

Published 2017-02-13 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 2.7 (Low). Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L.

EPSS exploit prediction

EPSS: 0.024 (83.7th percentile), scored 2026-09-30.

Low probability of exploitation in the next 30 days, but still tracked. 84th percentile — 83.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.024 · newest: 0.024 · change: +0.000

Affected products

References

ics-cert.us-cert.gov/advisories/ICSA-16-336-06 (US Government Resource, Third Party Advisory)
www.securityfocus.com/bid/95302 (VDB Entry, Third Party Advisory, vdb-entry)

Frequently asked questions

What is CVE-2016-9338?: CVE-2016-9338 is a low-severity vulnerability in Rockwellautomation 1763-L16awa Series A. CVSS score: 2.7/10. Published 2017-02-13.
How severe is CVE-2016-9338?: Low severity. CVSS v3 base score is 2.7 out of 10.