{"id":"CVE-2026-70155","aliases":["EUVD-2026-99180","GHSA-pwjq-hq83-6h95"],"status":"published","title":"Windows DNS Denial of Service Vulnerability","description":"Missing release of memory after effective lifetime in Windows DNS allows an unauthorized attacker to deny service over a network.","severity":{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.0133,"percentile":0.71287,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-401"],"published":"2026-10-13T18:59:39Z","modified":"2026-11-10T20:35:19Z","products":[{"vendor":"microsoft","product":"windows 10 version 1607"},{"vendor":"microsoft","product":"windows 10 version 1809"},{"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)"},{"vendor":"microsoft","product":"windows_10_1607"},{"vendor":"microsoft","product":"windows_10_1809"},{"vendor":"microsoft","product":"windows_server_2012"},{"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-2026-70155","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-70155"},{"url":"https://github.com/advisories/GHSA-pwjq-hq83-6h95"}],"sources":{"cve":[{"id":"CVE-2026-70155","title":"Windows DNS Denial of Service Vulnerability","description":"Missing release of memory after effective lifetime in Windows DNS allows an unauthorized attacker to deny service over a network.","status":"published","published":"2026-10-13T18:59:39.818Z","modified":"2026-11-10T20:35:19.883Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","level":"high","assessor":"cna"}],"cwes":["CWE-401"],"updated_at":"2026-11-10T22:18:28.707469Z"}],"euvd":[{"id":"EUVD-2026-99180","description":"Missing release of memory after effective lifetime in Windows DNS allows an unauthorized attacker to deny service over a network.","status":"published","published":"2026-10-13T18:59:39Z","modified":"2026-11-10T20:35:19Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-10T21:23:23.099302Z"}],"ghsa":[{"id":"GHSA-pwjq-hq83-6h95","title":"Missing release of memory after effective lifetime in Windows DNS allows an unauthorized attacker...","description":"Missing release of memory after effective lifetime in Windows DNS allows an unauthorized attacker to deny service over a network.","status":"published","published":"2026-10-13T21:34:10Z","modified":"2026-10-13T21:34:17Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-401"],"updated_at":"2026-11-02T15:13:15.111505Z"}],"nvd":[{"id":"CVE-2026-70155","description":"Missing release of memory after effective lifetime in Windows DNS allows an unauthorized attacker to deny service over a network.","status":"published","published":"2026-10-13T19:19:28.713Z","modified":"2026-10-16T17:34:17.117Z","cvss":[{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-401"],"updated_at":"2026-11-02T14:12:57.603498Z"}]}}