Rockwell Automation CompactLogix 5370 Exposure of Sensitive System Information to an Unauthorized Control Sphere (CVE-2026-9307)

medium Tenable OT Security Plugin ID 505886

Synopsis

The remote OT asset is affected by a vulnerability.

Description

A sensitive information disclosure security issue exists within the affected CompactLogix 5370 controllers. The controller's web server exposes CIP Connection IDs on the diagnostics webpage, which are accessible to any unauthenticated user on the network. This information can be leveraged by an attacker to construct malicious packets, leading to a denial-of-service condition.

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Solution

The following text was originally created by the Cybersecurity and Infrastructure Security Agency (CISA). The original can be found at CISA.gov.

Rockwell Automation recommends users update CompactLogix 5370 L1, L2, and L3 controllers to Version 38.011 or later.

Plugin Details

Severity: Medium

ID: 505886

File Name: tenable_ot_rockwell_CVE-2026-9307.nasl

Version: 1.1

Type: Remote

Family: Tenable.ot

Published: 7/29/2026

Updated: 7/29/2026

Supported Sensors: Tenable OT Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.73

CVSS v3

Risk Factor: Medium

Base Score: 5.3

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Vulnerability Information

CPE: cpe:/o:rockwellautomation:compactlogix_5370_l1_firmware, cpe:/o:rockwellautomation:compactlogix_5370_l2_firmware, cpe:/o:rockwellautomation:compactlogix_5370_l3_firmware

Required KB Items: Tenable.ot/Rockwell

Patch Publication Date: 6/16/2026

Vulnerability Publication Date: 6/16/2026

Reference Information

CVE: CVE-2026-9307

CWE: 497

ICSA: 26-167-04

Detections

Analytics