{"id":"CVE-2026-70166","title":"Out-of-bounds read in Windows DNS allows an authorized attacker to deny service over a network.","summary":"Out-of-bounds read in Windows DNS allows an authorized attacker to deny service over a network.","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","cwe":["CWE-125"],"vendor":"microsoft","product":"windows_10_1607","affected":["windows_10_1607 < 10.0.14393.9612","windows_10_1809 < 10.0.17763.9376","windows_server_2012","windows_server_2012 = r2","windows_server_2016 < 10.0.14393.9612","windows_server_2019 < 10.0.17763.9376","windows_server_2022 < 10.0.20348.5761","windows_server_2025 < 10.0.26100.33650"],"patched":["windows_10_1607 10.0.14393.9612","windows_10_1809 10.0.17763.9376","windows_server_2016 10.0.14393.9612","windows_server_2019 10.0.17763.9376","windows_server_2022 10.0.20348.5761","windows_server_2025 10.0.26100.33650"],"published":"2026-10-13","updated":"2026-10-16","sourceUpdated":"2026-10-16T17:33:16.777","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-70166","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-70166","label":"secure@microsoft.com"}],"tags":["nvd","cve.org"],"epss":0.01289,"epssPercentile":0.70053,"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-10-13T20:54:18.467573Z"},"ingestedAt":"2026-10-13T19:43:29.017Z","slug":"CVE-2026-70166","body":"## Overview\n\nOut-of-bounds read in Windows DNS allows an authorized attacker to deny service over a network.\n\n## Affected\n\n- `windows_10_1607 < 10.0.14393.9612`\n- `windows_10_1809 < 10.0.17763.9376`\n- `windows_server_2012`\n- `windows_server_2012 = r2`\n- `windows_server_2016 < 10.0.14393.9612`\n- `windows_server_2019 < 10.0.17763.9376`\n- `windows_server_2022 < 10.0.20348.5761`\n- `windows_server_2025 < 10.0.26100.33650`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `windows_10_1607 10.0.14393.9612`\n- `windows_10_1809 10.0.17763.9376`\n- `windows_server_2016 10.0.14393.9612`\n- `windows_server_2019 10.0.17763.9376`\n- `windows_server_2022 10.0.20348.5761`\n- `windows_server_2025 10.0.26100.33650`","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.3,"exploitation":0,"ransomware":0},"changes":[]}