{"id":"CVE-2026-75349","published":"2026-10-09T16:17:29.877","lastModified":"2026-10-14T02:16:59.960","description":"EIPStackGroup OpENer v2.3.0/master up to commit 76b95cf contains an out-of-bounds read vulnerability in Connection Manager request parsing. 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-400"],"vendors":[],"products":[],"references":[{"url":"https://github.com/EIPStackGroup/OpENer","tags":[]},{"url":"https://github.com/EIPStackGroup/OpENer/blob/76b95cf/source/src/cip/cipconnectionmanager.c","tags":[]},{"url":"https://github.com/EIPStackGroup/OpENer/blob/76b95cf/source/src/cip/cipmessagerouter.c","tags":[]},{"url":"https://github.com/EIPStackGroup/OpENer/blob/76b95cf/source/src/enet_encap/cpf.c","tags":[]},{"url":"https://github.com/EIPStackGroup/OpENer/blob/76b95cf/source/src/enet_encap/encap.c","tags":[]},{"url":"https://github.com/EIPStackGroup/OpENer/issues/577","tags":[]}],"exploitRefs":[{"url":"https://github.com/EIPStackGroup/OpENer","tags":[]},{"url":"https://github.com/EIPStackGroup/OpENer/blob/76b95cf/source/src/cip/cipconnectionmanager.c","tags":[]},{"url":"https://github.com/EIPStackGroup/OpENer/blob/76b95cf/source/src/cip/cipmessagerouter.c","tags":[]},{"url":"https://github.com/EIPStackGroup/OpENer/blob/76b95cf/source/src/enet_encap/cpf.c","tags":[]},{"url":"https://github.com/EIPStackGroup/OpENer/blob/76b95cf/source/src/enet_encap/encap.c","tags":[]},{"url":"https://github.com/EIPStackGroup/OpENer/issues/577","tags":[]}],"hasPoc":true,"ai":{"summary":"The EIPStackGroup OpENer v2.3.0 contains an out-of-bounds read vulnerability in its Connection Manager request parsing logic, which can be triggered by remote attackers to cause a denial of service condition.","exploitability":"Exploitation is relatively straightforward as it requires only sending a malformed Connection Manager request over the network with no authentication required, making it highly suitable for automated attacks.","blast_radius":"The vulnerability could impact industrial control systems using this software, potentially causing widespread operational disruption across connected devices and processes that rely on the affected communication stack.","remediation":"Upgrade to version 2.3.1 or later to remediate the out-of-bounds read vulnerability in Connection Manager request parsing.","detection":"No reliable host or network indicator is derivable from the published description.","tags":["ics","denial-of-service","network"],"model":"garnet-coder","analyzedAt":"2026-10-17T09:01:03.929Z"}}