{"id":"CVE-2026-6507","title":"A flaw was found in dnsmasq","summary":"A flaw was found in dnsmasq. A remote attacker could exploit an out-of-bounds write vulnerability by sending a specially crafted BOOTREPLY (Bootstrap Protocol Reply) packet to a dnsmasq server configured with the `--dhcp-split-relay` opt…","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-787"],"published":"2026-04-17","updated":"2026-08-26","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-6507","references":[{"url":"https://access.redhat.com/security/cve/CVE-2026-6507","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2459181","label":"secalert@redhat.com"}],"tags":["nvd"],"epss":0.00482,"epssPercentile":0.40555,"ingestedAt":"2026-08-26T17:47:12.181Z","slug":"CVE-2026-6507","body":"## Overview\n\nA flaw was found in dnsmasq. A remote attacker could exploit an out-of-bounds write vulnerability by sending a specially crafted BOOTREPLY (Bootstrap Protocol Reply) packet to a dnsmasq server configured with the `--dhcp-split-relay` option. This can lead to memory corruption, causing the dnsmasq daemon to crash and resulting in a denial of service (DoS).\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":41,"depthScoreParts":{"impact":41.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}