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CVE-2026-12659

HIGH
8.7
CVSS 4.0
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.

Metadata

CVE ID
CVE-2026-12659
State
PUBLISHED
Assigner
Rockwell
Reserved
2026-06-18 18:54 UTC
Published
2026-07-14 15:14 UTC
Last updated
2026-07-14 15:57 UTC
Primary CWE
CWE-415
CWE-415 Double free
Vendor / Product
Rockwell Automation / The FLEX 5000® EtherNet/IP Adapter
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 The FLEX 5000® EtherNet/IP Adapter — version 6.011
Weakness (CWE)
CWESourceDescription
CWE-415 cna CWE-415 Double free
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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