CVE-2026-12659

Rockwell Automation Flex 5000® Adapter - Denial of Service

Published Jul 14, 2026 CVSS 4.0 · 8.7 High EPSS < 1% KEV · Not listed
Description
A denial-of-service security issue exists in the affected products. The security issue stems from improper handling of exceptional conditions when processing crafted CIP packets sent to the adapter. A power cycle is required to recover the module and associated I/O.

Remediation

Vendor Solution

Upgrade to version 6.012 or later.

Tracking

Sign in to view the affected projects.

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
Description A denial-of-service security issue exists in the affected products. The security issue stems from improper handling of exceptional conditions when processing crafted CIP packets sent to the adapter. A power cycle is required to recover the module and associated I/O.
Title Rockwell Automation Flex 5000® Adapter - Denial of Service
Weaknesses CWE-415
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'}

Subscriptions

No data.

Weaknesses

Sources

Status
PUBLISHED
Assigner
Rockwell
Published
Updated
Jul 14, 2026, 3:57 PM
Reserved
Jun 18, 2026, 6:54 PM
Status
Awaiting Analysis
Published
Jul 14, 2026, 4:16 PM
Modified
Oct 24, 2026, 9:10 PM