Rockwell Automation Flex 5000 Adapter

p a href="https://github.com/cisagov/CSAF/blob/develop/csaf_files/OT/white/2026/icsa-26-197-08.json" strong View CSAF /strong /a /p h2 Summary /h2 p strong Successful exploitation of this vulnerability could allow an attacker to cause a denial-of-service condition on the affected product. /strong /p p The following versions of Rockwell Automation Flex 5000 Adapter are affected: /p ul li Flex 5000 Adapter 6.011 (CVE-2026-12659) /li /ul div class="csaf-table" table class="tablesaw tablesaw-stack" data-tablesaw-mode="stack" data-tablesaw-minimap thead tr th role="columnheader" data-tablesaw-priority="persist" CVSS /th th role="columnheader" Vendor /th th role="columnheader" Equipment /th th role="columnheader" Vulnerabilities /th /tr /thead tbody tr td v3 7.5 /td td Rockwell Automation /td td Rockwell Automation Flex 5000 Adapter /td td Double Free /td /tr /tbody /table /div h3 Background /h3 ul li strong Critical Infrastructure Sectors: /strong Critical Manufacturing, Information Technology /li li strong Countries/Areas Deployed: /strong Worldwide /li li strong Company Headquarters Location: /strong United States /li /ul hr h2 Vulnerabilities /h2 div class="csaf-accordion" p a class="csaf-accordion-toggle-all" href="#" Expand All + /a /p div class="csaf-accordion-item" h3 a class="csaf-accordion-toggle" href="#" CVE-2026-12659 /a /h3 div class="csaf-accordion-content" p 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. /p p a href="https://www.cve.org/CVERecord?id=CVE-2026-12659" View CVE Details /a /p hr h4 Affected Products /h4 h5 Rockwell Automation Flex 5000 Adapter /h5 div class="ics-vendor-version-status" div class="ics-vendor" strong Vendor: /strong br Rockwell Automation /div div class="ics-version" strong Product Version: /strong br Rockwell Automation Flex 5000 Adapter: 6.011 /div div class="ics-status" strong Product Status: /strong br known_affected /div /div div class="ics-remediations" h6 Remediations /h6 p strong Vendor fix /strong br Rockwell Automation recommends users to upgrade to the following: Flex 5000 Adapter version 6.012. /p p strong Mitigation /strong br Customers using the affected software, who are not able to upgrade to one of the corrected versions, should use Rockwell Automation's security best practices (https://support.rockwellautomation.com/app/answers/answer_view/a_id/1085012/loc/en_US#__highlight). br a href="https://support.rockwellautomation.com/app/answers/answer_view/a_id/1085012/loc/en_US#__highlight" https://support.rockwellautomation.com/app/answers/answer_view/a_id/1085012/loc/en_US#__highlight /a /p p strong Mitigation /strong br For more information, see Rockwell Automation Security Advisory SD1789 (https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1789.ht