{"id":"CVE-2026-65789","aliases":["EUVD-2026-56442","GHSA-wqhh-vq56-2wcj"],"status":"published","title":"Windows DNS Server Remote Code Execution Vulnerability","description":"Use after free in Windows DNS allows an unauthorized attacker to execute code over a network.","severity":{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00707,"percentile":0.53764,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-416"],"published":"2026-08-11T17:05:01Z","modified":"2026-10-30T17:20:45Z","products":[{"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)"},{"vendor":"microsoft","product":"windows_10_1607"},{"vendor":"microsoft","product":"windows_10_1809"},{"vendor":"microsoft","product":"windows_server_2016"},{"vendor":"microsoft","product":"windows_server_2019"},{"vendor":"microsoft","product":"windows_server_2022"},{"vendor":"microsoft","product":"windows_server_2025"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-65789","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-65789"},{"url":"https://github.com/advisories/GHSA-wqhh-vq56-2wcj"}],"sources":{"cve":[{"id":"CVE-2026-65789","title":"Windows DNS Server Remote Code Execution Vulnerability","description":"Use after free in Windows DNS allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-08-11T17:05:01.613Z","modified":"2026-10-30T17:20:45.185Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T13:37:02.780526Z"}],"euvd":[{"id":"EUVD-2026-56442","description":"Use after free in Windows DNS allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-08-11T17:05:01Z","modified":"2026-10-30T17:20:45Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-02T16:59:04.296921Z"}],"ghsa":[{"id":"GHSA-wqhh-vq56-2wcj","title":"Use after free in Windows DNS allows an unauthorized attacker to execute code over a network.","description":"Use after free in Windows DNS allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-08-11T18:31:39Z","modified":"2026-08-11T18:31:41Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T15:10:20.045782Z"}],"nvd":[{"id":"CVE-2026-65789","description":"Use after free in Windows DNS allows an unauthorized attacker to execute code over a network.","status":"published","published":"2026-08-11T17:18:58.73Z","modified":"2026-09-02T18:21:06.07Z","cvss":[{"version":"3.1","score":8.1,"vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-416"],"updated_at":"2026-11-02T14:12:36.880938Z"}]}}