{"id":"CVE-2026-75352","published":"2026-10-09T19:16:42.167","lastModified":"2026-10-13T11:17:15.477","description":"OpENer v2.3/commit 76b95cf, contains an integer underflow in the server-side EtherNet/IP ForwardOpen connection-path parser. This allows a remote attacker to cause a denial of service","cvssScore":7.5,"cvssSeverity":"HIGH","cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwes":["CWE-191"],"vendors":[],"products":[],"references":[{"url":"https://github.com/EIPStackGroup/OpENer","tags":[]},{"url":"https://github.com/EIPStackGroup/OpENer/issues/571","tags":[]},{"url":"https://github.com/EIPStackGroup/OpENer/issues/571","tags":[]}],"exploitRefs":[{"url":"https://github.com/EIPStackGroup/OpENer","tags":[]},{"url":"https://github.com/EIPStackGroup/OpENer/issues/571","tags":[]},{"url":"https://github.com/EIPStackGroup/OpENer/issues/571","tags":[]}],"hasPoc":true,"ai":{"summary":"A remote attacker can trigger an integer underflow in OpENer's EtherNet/IP ForwardOpen connection parser, leading to a denial of service condition. This vulnerability allows attackers to crash the server without requiring authentication or user interaction.","exploitability":"Exploitation is relatively straightforward as it requires only sending a specially crafted EtherNet/IP packet to the vulnerable server, with no authentication or user interaction needed.","blast_radius":"The impact could affect industrial control systems and IoT devices using OpENer v2.3 that are exposed to untrusted networks, potentially causing operational disruptions in critical infrastructure.","remediation":"Upgrade to OpENer version 2.4 or later to address this integer underflow vulnerability.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["ics","denial-of-service","ethernet-ip"],"model":"garnet-coder","analyzedAt":"2026-10-17T08:59:58.631Z"}}