{"document":{"category":"csaf_vex","csaf_version":"2.0","title":"CVE-2026-0646: Rockwell Automation FLEX I/O Dual-port EtherNet/IP Adapters – Multiple Vulnerabilities","publisher":{"category":"vendor","name":"HarborGuard Database","namespace":"https://database.harborguard.co"},"tracking":{"id":"CVE-2026-0646","status":"final","version":"1","initial_release_date":"2026-06-16T14:19:21.386Z","current_release_date":"2026-06-16T15:24:33.927Z","revision_history":[{"date":"2026-06-16T14:19:21.386Z","number":"1","summary":"Initial machine-readable export from HarborGuard."}]},"distribution":{"tlp":{"label":"WHITE"},"text":"Public CVE data; freely redistributable."},"notes":[{"category":"description","text":"A denial-of-service security issue exists within the 1794-AENTR adapter due to improper memory handling of CIP protocol requests. This vulnerability can result in the adapter faulting and losing connection to its associated I/O modules, requiring a manual reset to recover.","title":"CVE description"}],"references":[{"category":"self","summary":"CVE-2026-0646 on HarborGuard Database","url":"https://database.harborguard.co/cve/CVE-2026-0646"},{"category":"external","summary":"CVE Record","url":"https://www.cve.org/CVERecord?id=CVE-2026-0646"},{"category":"external","summary":"rockwellautomation.com","url":"https://www.rockwellautomation.com/en-us/trust-center/security-advisories/advisory.SD1775.html"}]},"product_tree":{"branches":[{"category":"vendor","name":"Rockwell Automation","branches":[{"category":"product_name","name":"FLEX I/O EtherNet/IP Adapters","branches":[{"category":"product_version","name":"2.012","product":{"name":"Rockwell Automation FLEX I/O EtherNet/IP Adapters 2.012","product_id":"CSAFPID-1","product_identification_helper":{"cpe":"cpe:2.3:a:rockwell_automation:flex_i\\/o_ethernet\\/ip_adapters:2.012:*:*:*:*:*:*:*"}}}]}]}]},"vulnerabilities":[{"cve":"CVE-2026-0646","title":"Rockwell Automation FLEX I/O Dual-port EtherNet/IP Adapters – Multiple Vulnerabilities","notes":[{"category":"description","text":"A denial-of-service security issue exists within the 1794-AENTR adapter due to improper memory handling of CIP protocol requests. This vulnerability can result in the adapter faulting and losing connection to its associated I/O modules, requiring a manual reset to recover.","title":"CVE description"}],"product_status":{"known_affected":["CSAFPID-1"]},"scores":[{"cvss_v4":{"version":"4.0","vectorString":"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","baseScore":8.7,"baseSeverity":"HIGH"},"products":["CSAFPID-1"]}],"remediations":[{"category":"none_available","details":"No fixed version is published yet. Monitor the upstream advisory.","product_ids":["CSAFPID-1"]}]}]}