{"id":"CVE-2026-109463","aliases":["EUVD-2026-121538","GHSA-xqwr-x24x-w8m7"],"status":"published","title":"Windows DNS Remote Code Execution Vulnerability","description":"Deserialization of untrusted data in Windows DNS allows an unauthorized attacker to execute code over a network.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.01115,"percentile":0.66507,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-502"],"published":"2026-11-10T18:15:11Z","modified":"2026-11-10T21:51:58Z","products":[{"vendor":"microsoft","product":"windows 10 version 1607"},{"vendor":"microsoft","product":"windows 10 version 1809"},{"vendor":"microsoft","product":"windows 10 version 21h2"},{"vendor":"microsoft","product":"windows 10 version 22h2"},{"vendor":"microsoft","product":"windows 11 version 23h2"},{"vendor":"microsoft","product":"windows 11 version 24h2"},{"vendor":"microsoft","product":"windows 11 version 25h2"},{"vendor":"microsoft","product":"windows 11 version 26h1"},{"vendor":"microsoft","product":"windows 11 version 26h2"},{"vendor":"microsoft","product":"windows server 2012"},{"vendor":"microsoft","product":"windows server 2012 (server core installation)"},{"vendor":"microsoft","product":"windows server 2012 r2"},{"vendor":"microsoft","product":"windows server 2012 r2 (server core installation)"},{"vendor":"microsoft","product":"windows server 2016"},{"vendor":"microsoft","product":"windows server 2016 (server core installation)"},{"vendor":"microsoft","product":"windows server 2019"},{"vendor":"microsoft","product":"windows server 2019 (server core installation)"},{"vendor":"microsoft","product":"windows server 2022"},{"vendor":"microsoft","product":"windows server 2025"},{"vendor":"microsoft","product":"windows server 2025 (server core installation)"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-109463","tags":["vendor-advisory","patch"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-109463"},{"url":"https://github.com/advisories/GHSA-xqwr-x24x-w8m7"}],"sources":{"cve":[{"id":"CVE-2026-109463","title":"Windows DNS Remote Code Execution Vulnerability","description":"Deserialization of untrusted data in Windows DNS allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-11-10T18:15:11.002Z","modified":"2026-11-12T21:42:21.979Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"cwes":["CWE-502"],"updated_at":"2026-11-10T19:39:57.855077Z"}],"euvd":[{"id":"EUVD-2026-121538","description":"Deserialization of untrusted data in Windows DNS allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-11-10T18:15:11Z","modified":"2026-11-12T21:42:21Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-10T23:24:18.784503Z"}],"ghsa":[{"id":"GHSA-xqwr-x24x-w8m7","title":"Deserialization of untrusted data in Windows DNS allows an unauthorized attacker to execute code...","description":"Deserialization of untrusted data in Windows DNS allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-11-10T21:32:28Z","modified":"2026-11-10T21:32:35Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-502"],"updated_at":"2026-11-10T21:57:48.570264Z"}],"nvd":[{"id":"CVE-2026-109463","description":"Deserialization of untrusted data in Windows DNS allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-11-10T19:18:15.41Z","modified":"2026-11-10T22:18:15.067Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-502"],"updated_at":"2026-11-11T00:21:54.23974Z"}]}}