{"id":"CVE-2026-62817","aliases":["EUVD-2026-56394","GHSA-6pr5-hpq7-qp74"],"status":"published","title":"Windows DNS Server Remote Code Execution Vulnerability","description":"Out-of-bounds write in Windows DNS allows an unauthorized attacker to execute code over an adjacent network.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:A/AC:L/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":0.00535,"percentile":0.45473,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-787"],"published":"2026-08-11T17:04:32Z","modified":"2026-10-30T17:20:20Z","products":[{"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_1809"},{"vendor":"microsoft","product":"windows_10_21h2"},{"vendor":"microsoft","product":"windows_10_22h2"},{"vendor":"microsoft","product":"windows_11_23h2"},{"vendor":"microsoft","product":"windows_11_24h2"},{"vendor":"microsoft","product":"windows_11_25h2"},{"vendor":"microsoft","product":"windows_11_26h1"},{"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-2026-62817","tags":["vendor-advisory","patch","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-62817"},{"url":"https://github.com/advisories/GHSA-6pr5-hpq7-qp74"}],"sources":{"cve":[{"id":"CVE-2026-62817","title":"Windows DNS Server Remote Code Execution Vulnerability","description":"Out-of-bounds write in Windows DNS allows an unauthorized attacker to execute code over an adjacent network.","status":"published","published":"2026-08-11T17:04:32.233Z","modified":"2026-10-30T17:20:20.221Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:20:14.999906Z"}],"euvd":[{"id":"EUVD-2026-56394","description":"Out-of-bounds write in Windows DNS allows an unauthorized attacker to execute code over an adjacent network.","status":"published","published":"2026-08-11T17:04:32Z","modified":"2026-10-30T17:20:20Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-02T16:59:04.768038Z"}],"ghsa":[{"id":"GHSA-6pr5-hpq7-qp74","title":"Out-of-bounds write in Windows DNS allows an unauthorized attacker to execute code over an...","description":"Out-of-bounds write in Windows DNS allows an unauthorized attacker to execute code over an adjacent network.","status":"published","published":"2026-08-11T18:31:25Z","modified":"2026-08-11T18:31:29Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T15:10:19.387522Z"}],"nvd":[{"id":"CVE-2026-62817","description":"Out-of-bounds write in Windows DNS allows an unauthorized attacker to execute code over an adjacent network.","status":"published","published":"2026-08-11T17:18:35.647Z","modified":"2026-09-02T18:20:54.543Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:12:36.499002Z"}]}}