{"id":"CVE-2026-62878","title":"Windows DNS Server Remote Code Execution Vulnerability","summary":"Stack-based buffer overflow in Windows DNS allows an unauthorized attacker to execute code over a network.","severity":"critical","cvss":9.8,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","cvssSource":"cna","cwe":["CWE-121"],"vendor":"Microsoft","product":"Windows Server 2012","affected":["windows_server_2012 >= 6.2.9200.0 < 6.2.9200.26280","windows_server_2012_server_core_installation >= 6.2.9200.0 < 6.2.9200.26280","windows_server_2012_r2 >= 6.3.9600.0 < 6.3.9600.23338","windows_server_2012_r2_server_core_installation >= 6.3.9600.0 < 6.3.9600.23338","windows_server_2016 >= 10.0.14393.0 < 10.0.14393.9418","windows_server_2016_server_core_installation >= 10.0.14393.0 < 10.0.14393.9418","windows_server_2019 >= 10.0.17763.0 < 10.0.17763.9121","windows_server_2019_server_core_installation >= 10.0.17763.0 < 10.0.17763.9121","windows_server_2022 >= 10.0.20348.0 < 10.0.20348.5499","windows_server_2025 >= 10.0.26100.0 < 10.0.26100.33296","windows_server_2025_server_core_installation >= 10.0.26100.0 < 10.0.26100.33296"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-08-12T03:57:32.715986Z"},"published":"2026-08-11","updated":"2026-09-16","sourceUpdated":"2026-09-16T16:24:04.134Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-62878","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-62878","label":"Windows DNS Server Remote Code Execution Vulnerability"}],"tags":["cve.org"],"epss":0.0126,"epssPercentile":0.6782,"ingestedAt":"2026-09-08T18:07:34.898Z","slug":"CVE-2026-62878","body":"## Overview\n\nStack-based buffer overflow in Windows DNS allows an unauthorized attacker to execute code over a network.\n\n## Affected\n\n- `windows_server_2012 >= 6.2.9200.0 < 6.2.9200.26280`\n- `windows_server_2012_server_core_installation >= 6.2.9200.0 < 6.2.9200.26280`\n- `windows_server_2012_r2 >= 6.3.9600.0 < 6.3.9600.23338`\n- `windows_server_2012_r2_server_core_installation >= 6.3.9600.0 < 6.3.9600.23338`\n- `windows_server_2016 >= 10.0.14393.0 < 10.0.14393.9418`\n- `windows_server_2016_server_core_installation >= 10.0.14393.0 < 10.0.14393.9418`\n- `windows_server_2019 >= 10.0.17763.0 < 10.0.17763.9121`\n- `windows_server_2019_server_core_installation >= 10.0.17763.0 < 10.0.17763.9121`\n- `windows_server_2022 >= 10.0.20348.0 < 10.0.20348.5499`\n- `windows_server_2025 >= 10.0.26100.0 < 10.0.26100.33296`\n- `windows_server_2025_server_core_installation >= 10.0.26100.0 < 10.0.26100.33296`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":54,"depthScoreParts":{"impact":53.9,"likelihood":0.3,"exploitation":0,"ransomware":0},"changes":[]}