{"id":"CVE-2026-5367","title":"A flaw was found in OVN (Open Virtual Network)","summary":"A flaw was found in OVN (Open Virtual Network). A remote attacker, by sending crafted DHCPv6 (Dynamic Host Configuration Protocol for IPv6) SOLICIT packets with an inflated Client ID length, could cause the ovn-controller to read beyond …","severity":"high","cvss":8.6,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N","cwe":["CWE-130","CWE-130"],"published":"2026-04-24","updated":"2026-08-25","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-5367","references":[{"url":"https://access.redhat.com/errata/RHSA-2026:11694","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:11695","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:11696","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:11698","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:11700","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:11701","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:11702","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:22110","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:22111","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/security/cve/CVE-2026-5367","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2455863","label":"secalert@redhat.com"},{"url":"http://www.openwall.com/lists/oss-security/2026/04/20/3","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"http://www.openwall.com/lists/oss-security/2026/04/20/5","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://access.redhat.com/errata/RHSA-2026:11694","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:11695","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:11696","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:11698","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:11700","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:11701","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:11702","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:22110","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/errata/RHSA-2026:22111","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://access.redhat.com/security/cve/CVE-2026-5367","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2455863","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-5367.json","label":"0b0ca135-0b70-47e7-9f44-1890c2a1c46c"}],"tags":["nvd"],"epss":0.00868,"epssPercentile":0.56731,"ingestedAt":"2026-08-25T13:26:20.198Z","slug":"CVE-2026-5367","body":"## Overview\n\nA flaw was found in OVN (Open Virtual Network). A remote attacker, by sending crafted DHCPv6 (Dynamic Host Configuration Protocol for IPv6) SOLICIT packets with an inflated Client ID length, could cause the ovn-controller to read beyond the bounds of a packet. This out-of-bounds read can lead to the disclosure of sensitive information stored in heap memory, which is then returned to the attacker's virtual machine port.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":47,"depthScoreParts":{"impact":47.3,"likelihood":0.2,"exploitation":0,"ransomware":0},"changes":[]}