OpENer Out-of-Bounds Read in CIP ForwardOpen — CVE-2026-51537
ID: 3ce040b2-3e4b-5026-bb1f-716ab08bf9a2
STIX ID: report--3ce040b2-3e4b-5026-bb1f-716ab08bf9a2
Feed Name: CosmicBytez Labs
Threat Score
A critical out-of-bounds read (CVE-2026-51537, CVSS 9.1) in EIPStackGroup OpENer 2.3.0's Connection Manager allows unauthenticated network attackers to send malformed CIP ForwardOpen/LargeForwardOpen requests that can crash EtherNet/IP devices or leak memory; the report details affected versions, exploitation flow, industrial impacts, detection indicators, and recommended vendor firmware updates and network mitigations.
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