CVE-2026-9624

RSLinx Classic® - Multiple Vulnerabilities

Published Sep 1, 2026 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Description
A denial-of-service security issue exists within RSLinx® Classic. A crafted CIP packet can cause the RSLinx® Classic service to crash due to insufficient data length validation, requiring a  restart of the service to recover.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Rockwellautomation
Rockwellautomation rslinx Classic
Vendors & Products Rockwellautomation
Rockwellautomation rslinx Classic
Type Values Removed Values Added
Description A denial-of-service security issue exists within RSLinx® Classic. A crafted CIP packet can cause the RSLinx® Classic service to crash due to insufficient data length validation, requiring a  restart of the service to recover.
Title RSLinx Classic® - Multiple Vulnerabilities
First Time appeared Rockwell Automation
Rockwell Automation rslinx Classic
Weaknesses CWE-191
CPEs cpe:2.3:a:rockwell_automation:rslinx_classic_:v4.50_and_prior:*:*:*:*:*:*:*
Vendors & Products Rockwell Automation
Rockwell Automation rslinx Classic
References
Metrics cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Rockwell
Published
Updated
Sep 1, 2026, 3:46 PM
Reserved
May 26, 2026, 5:18 PM
Status
Awaiting Analysis
Published
Sep 1, 2026, 2:17 PM
Modified
Sep 1, 2026, 8:50 PM