{"id":"CVE-2026-75352","title":"OpENer v2.3/commit 76b95cf, contains an integer underflow in the server-side EtherNet/IP ForwardOpen connection-path parser","summary":"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","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-191"],"vendor":"Red Hat","published":"2026-10-09","updated":"2026-10-16","sourceUpdated":"2026-10-16T17:16:41.300","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-75352","references":[{"url":"https://github.com/EIPStackGroup/OpENer","label":"cve@mitre.org"},{"url":"https://github.com/EIPStackGroup/OpENer/issues/571","label":"cve@mitre.org"},{"url":"https://github.com/EIPStackGroup/OpENer/issues/571","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-75352.json"},{"url":"https://access.redhat.com/security/cve/CVE-2026-75352"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-75352"}],"tags":["nvd","csaf","vex","red-hat","cve.org","exploit-available"],"epss":0.00396,"epssPercentile":0.33586,"exploitAvailable":true,"ssvc":{"exploitation":"poc","automatable":"yes","technicalImpact":"partial","timestamp":"2026-10-13T10:59:37.974359Z"},"ingestedAt":"2026-10-09T20:11:26.052Z","slug":"CVE-2026-75352","body":"## Overview\n\nOpENer 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\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **Red Hat VEX** · updated 2026-10-09 · [vex](https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-75352.json)","depth":"midnight","depthScore":53,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[{"seq":220817,"id":"CVE-2026-75352","ts":1792026836305,"field":"exploit_available","old":"false","new":"true"},{"seq":218751,"id":"CVE-2026-75352","ts":1791620417016,"field":"cvss","old":null,"new":"7.5"},{"seq":218750,"id":"CVE-2026-75352","ts":1791620417016,"field":"severity","old":"none","new":"high"}]}