EUVD-2026-43606
GHSA-vq3c-wgc6-rvmq
Severity by source
AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Primary rating from Vendor (mitre) · only source for this CVE.
CVSS VectorVendor: mitre
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
4DescriptionCVE.org
OpENer 2.3.0 (master branch up to commit 76b95cf) is vulnerable to a severe memory corruption issue caused by an integer underflow in the processing of connected explicit messages (SendUnitData).
AnalysisAI
Remote memory corruption in the OpENer EtherNet/IP stack (2.3.0 master branch up to commit 76b95cf) stems from an integer underflow while parsing connected explicit messages via the SendUnitData encapsulation command, allowing network attackers to corrupt memory on the target device. The CVSS 3.1 score of 9.8 (AV:N/PR:N) indicates unauthenticated remote exploitation with full confidentiality, integrity, and availability impact. …
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Recommended ActionAI
Within 24 hours, identify and document all systems running OpENer EtherNet/IP stack 2.3.0, focusing on production industrial control systems and network-exposed applications. …
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Same weakness CWE-191 – Integer Underflow
View allSame technique Buffer Overflow
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External POC / Exploit Code
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