{"id":"CVE-2026-61920","title":"Concurrent execution using shared resource with improper synchronization ('race condition') in Windows DNS allows an authorized attacker to execute code over a network.","summary":"Concurrent execution using shared resource with improper synchronization ('race condition') in Windows DNS allows an authorized attacker to execute code over a network.","severity":"medium","cvss":6.6,"cvssVector":"CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:H/I:H/A:H","cwe":["CWE-362","CWE-416"],"published":"2026-08-11","updated":"2026-08-16","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-61920","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-61920","label":"secure@microsoft.com"}],"tags":["nvd","cve.org"],"epss":0.00484,"epssPercentile":0.40835,"ingestedAt":"2026-08-16T19:41:34.060Z","vendor":"Microsoft","product":"Windows Server 2012 R2","affected":["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":"2026-08-12T03:57:30.453243Z"},"slug":"CVE-2026-61920","body":"## Overview\n\nConcurrent execution using shared resource with improper synchronization ('race condition') in Windows DNS allows an authorized attacker to execute code over a network.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":36.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}