{"id":"CVE-2026-93009","aliases":[],"cve":{"records":[{"id":"CVE-2026-93009","source":"redhat","state":"PUBLISHED","reasons":[],"replacements":[],"disputed":false,"unsupportedWhenAssigned":false,"reserved":"2026-09-17T14:35:34.562Z","published":"2026-10-29T13:13:34.504Z","modified":"2026-10-30T08:05:48.784Z"}],"publishers":[{"name":"redhat","role":"CNA","organizationId":"53f830b8-0a3f-465b-8143-3b8a9948e749","modified":"2026-10-30T08:05:48.784Z"}],"references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-93009","tags":["vdb-entry","x_refsource_REDHAT"],"source":"redhat"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2536083","tags":["issue-tracking","x_refsource_REDHAT"],"source":"redhat"}],"weaknesses":[{"id":"CWE-125","description":"Out-of-bounds Read","source":"redhat"}],"applicability":[],"prioritization":[]},"title":"Dnsmasq: dnsmasq: heap out-of-bounds read in dhcpv6 option 39 fqdn decoder","titleSource":"redhat","descriptionSource":"redhat","description":"A flaw was found in dnsmasq. The DHCPv6 client hostname parser can read one byte past the end of a crafted FQDN option because it checks the next label length before confirming the pointer is still inside the option. An attacker on the local network can trigger this with a single DHCPv6 packet. The extra byte is not returned to the client or logged, and no crash has been demonstrated.","score":4.3,"severity":"medium","published":"2026-10-29T13:13:34.504Z","modified":"2026-10-30T08:05:48.784Z","withdrawn":false,"knownExploited":false,"affected":[],"products":[{"vendor":"Red Hat","name":"Red Hat Ceph Storage 9","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/a:redhat:ceph_storage:9"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93009"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 10","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:10"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93009"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 6","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:6"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93009"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 7","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:7"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93009"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 8","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:8"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93009"},{"vendor":"Red Hat","name":"Red Hat Enterprise Linux 9","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/o:redhat:enterprise_linux:9"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93009"},{"vendor":"Red Hat","name":"Red Hat OpenShift Container Platform 4","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift:4"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93009"},{"vendor":"Red Hat","name":"Red Hat OpenShift Container Platform 4","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift:4"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93009"},{"vendor":"Red Hat","name":"Red Hat OpenShift Container Platform 4","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift:4"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93009"},{"vendor":"Red Hat","name":"Red Hat OpenShift Container Platform 4","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift:4"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93009"},{"vendor":"Red Hat","name":"Red Hat OpenShift Container Platform 5","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift:5"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93009"},{"vendor":"Red Hat","name":"Red Hat OpenShift Container Platform 5","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/a:redhat:openshift:5"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93009"},{"vendor":"Red Hat","name":"Red Hat OpenStack Platform 13 (Queens)","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/a:redhat:openstack:13"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93009"},{"vendor":"Red Hat","name":"Red Hat OpenStack Platform 18.0","platforms":[],"versions":[],"defaultStatus":"affected","cpes":["cpe:/a:redhat:openstack:18.0"],"source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93009"}],"remediation":[{"text":"The following measures reduce risk:\n\n1. If DHCPv6 is not required, do not configure any IPv6 dhcp-range.\n2. Compile without DHCPv6 using COPTS=-DNO_DHCP6 if IPv6 DHCP is not needed.\n3. Restrict dnsmasq to trusted interfaces with --interface=<iface>.","source":"redhat","url":"https://www.cve.org/CVERecord?id=CVE-2026-93009"}],"references":["https://access.redhat.com/security/cve/CVE-2026-93009","https://bugzilla.redhat.com/show_bug.cgi?id=2536083"],"sources":[{"name":"CVE","id":"CVE-2026-93009","modified":"2026-10-30T08:05:48.784Z","url":"https://www.cve.org/CVERecord?id=CVE-2026-93009"}],"assessments":[{"source":"redhat","vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","score":4.3}],"sourceAffected":[],"observedAt":"2026-10-30T08:11:05.075Z","kev":{"status":"not-listed","checkedAt":"2026-10-31T10:00:31.629Z"},"coverage":[{"source":"NVD","status":"available","checkedAt":"2026-10-30T08:15:32.207Z","attemptedAt":"2026-10-30T08:15:32.207Z"},{"source":"GHSA","status":"available","checkedAt":"2026-10-30T08:15:32.754Z","attemptedAt":"2026-10-30T08:15:32.754Z"},{"source":"EUVD","status":"available","checkedAt":"2026-10-30T08:15:32.750Z","attemptedAt":"2026-10-30T08:15:32.750Z"},{"source":"EPSS","status":"no-result","checkedAt":"2026-10-30T08:15:32.309Z","attemptedAt":"2026-10-30T08:15:32.309Z"}],"evidence":[{"source":"NVD","id":"CVE-2026-93009","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-93009","modified":"2026-10-29T14:18:00.480","score":4.3,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","checkedAt":"2026-10-30T08:15:32.207Z"},{"source":"ENISA EUVD","id":"EUVD-2026-112826","url":"https://euvd.enisa.europa.eu/vulnerability/EUVD-2026-112826","modified":"Oct 29, 2026, 1:13:34 PM","score":4.3,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","checkedAt":"2026-10-30T08:15:32.750Z"},{"source":"GitHub Advisory Database","id":"GHSA-6qrc-rpqw-59wp","url":"https://github.com/advisories/GHSA-6qrc-rpqw-59wp","modified":"2026-10-29T15:30:59Z","score":4.3,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","checkedAt":"2026-10-30T08:15:32.754Z"}],"aiSummary":{"text":"A heap out-of-bounds read flaw in dnsmasq's DHCPv6 client hostname parser can be triggered by an attacker on the local network with a crafted FQDN option. The impact is unclear. Affected products include various Red Hat Enterprise Linux and OpenShift Container Platform versions.","model":"@cf/meta/llama-3.3-70b-instruct-fp8-fast","generatedAt":"2026-10-30T08:58:20.082Z","sources":[{"name":"CVE","url":"https://www.cve.org/CVERecord?id=CVE-2026-93009"}]}}