Vulnerability in Rockwell Automation Allen-Bradley MicroLogi… (CVE-2016-9338, CVSS 2.7)

Summary

Vulnerability in Rockwell Automation Allen-Bradley MicroLogix (CVE-2016-9338). Risk of unauthorized operations or information disclosure.

Original description

The description as published by the source.

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.

Source: NIST National Vulnerability Database NVD

Auto-generated summary

Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.

A vulnerability tracked as CVE-2016-9338 has been found in Rockwell Automation Allen-Bradley MicroLogix.
Risk of unauthorized operations or information disclosure. CVSS score: 2.7/10.
What to do: apply the vendor's official patched release.
If unsure, ask your IT team or search "Rockwell Automation Allen-Bradley MicroLogix CVE-2016-9338" on the vendor's site.

CVE-2016-9338 (Rockwell Automation Allen-Bradley MicroLogix) — CVSS v3 2.7
Attack vector: remote (network-reachable) / no user interaction
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.

❓ What is the problem

A vulnerability (unclassified) exists in Rockwell Automation Allen-Bradley MicroLogix.

📍 Affected scope

Check the vendor advisory for the affected versions of Rockwell Automation Allen-Bradley MicroLogix.

🔥 Severity

Severity: Low (CVSS 2.7/10). Risk of unauthorized operations or information disclosure.

🔧 How to fix

Update to the patched release per vendor advisory.

🛡️ Workaround

Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.

🔍 Detection

Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Audit SBOM/dependencies to find affected services.

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

1
Identify exposure identify
```
Audit SBOM/dependencies for affected components.
```
資産台帳・SBOM・依存マニフェストで Rockwell Automation Allen-Bradley MicroLogix を使っているサービスとバージョンを洗い出す。
2
Post-deployment verification verify
```
Confirm patched version is live in production
```
パッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。

References

advisory securityfocus.com
advisory ics-cert.us-cert.gov