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CVE-2026-0646

HIGH
8.7
CVSS 4.0
Description
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.

Metadata

CVE ID
CVE-2026-0646
State
PUBLISHED
Assigner
Rockwell
Reserved
2026-01-06 16:08 UTC
Published
2026-06-16 14:19 UTC
Last updated
2026-06-16 15:24 UTC
Primary CWE
CWE-401
CWE-401 – Missing Release of Memory after Effective Lifetime
Vendor / Product
Rockwell Automation / FLEX I/O EtherNet/IP Adapters
Sources
cve.org  ·  NVD

Severity & Metrics

8.7 HIGH CVSS 4.0
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
SSVC — CISA Coordinator
Exploitation
none
Automatable
yes
Tech. Impact
partial
Affected products (1)
VendorProductPlatformVersions
Rockwell Automation FLEX I/O EtherNet/IP Adapters — 2.012
Weakness (CWE)
CWESourceDescription
CWE-401 cna CWE-401 – Missing Release of Memory after Effective Lifetime
CVSS scores (1)
ScoreSeverityVersionSourceVector
8.7 HIGH 4.0 cna 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
References (1)
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