{"id":"CVE-2026-4892","summary":"CVE-2026-4892","details":"A heap-based out-of-bounds write vulnerability in the DHCPv6 implementation of dnsmasq allows local attackers to execute arbitrary code with root privileges via a crafted DHCPv6 packet.","modified":"2026-07-08T08:13:37.764512982Z","published":"2026-05-11T16:47:58.846Z","related":["ALSA-2026:19158","ALSA-2026:19373","ALSA-2026:20589","CGA-m8rq-h3x5-gvq3","SUSE-SU-2026:1934-1","SUSE-SU-2026:21640-1","SUSE-SU-2026:21677-1","SUSE-SU-2026:21733-1","SUSE-SU-2026:21788-1","SUSE-SU-2026:2458-1","openSUSE-SU-2026:10821-1","openSUSE-SU-2026:20748-1"],"database_specific":{"cna_assigner":"certcc","unresolved_ranges":[{"source":"AFFECTED_FIELD","extracted_events":[{"fixed":"2.92rel2"}]}],"osv_generated_from":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/4xxx/CVE-2026-4892.json"},"references":[{"type":"WEB","url":"https://github.com/pi-hole/FTL/releases/tag/v6.6.2"},{"type":"WEB","url":"https://lists.thekelleys.org.uk/pipermail/dnsmasq-discuss/2026q2/018471.html"},{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-4892.json"},{"type":"WEB","url":"https://thekelleys.org.uk/dnsmasq/CVE/"},{"type":"WEB","url":"https://www.kb.cert.org/vuls/id/471747"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:19158"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:19373"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:20589"},{"type":"ADVISORY","url":"https://access.redhat.com/errata/RHSA-2026:34508"},{"type":"ADVISORY","url":"https://access.redhat.com/security/cve/CVE-2026-4892"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/4xxx/CVE-2026-4892.json"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-4892"},{"type":"REPORT","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2458518"},{"type":"FIX","url":"https://github.com/NixOS/nixpkgs/pull/519082"},{"type":"FIX","url":"https://github.com/NixOS/nixpkgs/pull/519093"}],"affected":[{"ranges":[{"type":"GIT","repo":"https://github.com/pi-hole/ftl","events":[{"introduced":"0"},{"fixed":"82c58cc45435ddd77875daf368cf64398bc15966"}],"database_specific":{"source":"REFERENCES"}}],"versions":["v6.6.1","v6.6","v6.5","v6.4.1","v6.3.3","v6.3.2","v6.3.1","v6.3","v6.2.3","v6.2.2","v6.2.1","v6.2","v6.1","v6.0.4","v6.0.3","v6.0.2","v6.0.1","v6.0","v5.25.2","v5.25.1","v5.25","v5.24","v5.23","v5.22","v5.21","v5.20.1","v5.20","v5.19.2","v5.19.1","v5.19","v5.18.2","v5.18.1","v5.18","v5.17","v5.16.3","v5.16.2","v5.16.1","v5.16","v5.15","v5.14","v5.13","v5.12.1","v5.12","v5.11","v5.10.2","v5.10.1","v5.10","v5.9","v5.8.1","v5.8","v5.7","v5.6","v5.5.1","v5.5","v5.4","v5.3.4","v5.3.3","v5.3.2","v5.3.1","v5.3","v5.2","v5.1","v5.0","v4.3.1","v4.3","v4.2.3","v4.2.2","v4.2.1","v4.2","v4.1.2","v4.1.1","v4.1","v4.0","v3.0","v2.13.2","v2.13.1","v2.13","v2.12","v2.11.1","v2.11","v2.10","v2.9.4","v2.9.3","v2.9.2","v2.9.1","v2.9","v2.8","v2.7.4","v2.7.3","v2.7.2","v2.7.1","v2.7","v2.6.2","v2.6.1","v2.6","v2.5","v2.4.1","v2.4","v2.3.1","v2.3","v2.2","v2.1","v2.0","v1.11.1","v1.11","v1.10.3","v1.10.2","v1.10.1","v1.10","v1.9","v1.8","v1.7","v1.6","v1.5.1","v1.5","v1.4","v1.3.1","v1.3","v1.2.1","v1.2","v1.1","v1.0"],"database_specific":{"source":"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-4892.json"}}],"schema_version":"1.7.5","severity":[{"type":"CVSS_V3","score":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"}]}