{"id":"CVE-2026-44805","title":"Windows Network Controller (NC) Host Agent Denial of Service Vulnerability","summary":"Use after free in Windows Network Controller (NC) Host Agent allows an authorized attacker to deny service locally.","severity":"medium","cvss":5.5,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C","cvssSource":"cna","cwe":["CWE-416","CWE-822"],"vendor":"Microsoft","product":"Windows Server 2019","affected":["windows_server_2019 >= 10.0.17763.0 < 10.0.17763.8880","windows_server_2019_server_core_installation >= 10.0.17763.0 < 10.0.17763.8880","windows_server_2022 >= 10.0.20348.0 < 10.0.20348.5256","windows_server_2025 >= 10.0.26100.0 < 10.0.26100.32995","windows_server_2025_server_core_installation >= 10.0.26100.0 < 10.0.26100.32995"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"partial","timestamp":"2026-06-10T12:46:18.193427Z"},"published":"2026-06-09","updated":"2026-09-24","sourceUpdated":"2026-09-24T13:45:09.063Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-44805","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-44805","label":"Windows Network Controller (NC) Host Agent Denial of Service Vulnerability"}],"tags":["cve.org"],"epss":0.00356,"epssPercentile":0.29448,"ingestedAt":"2026-09-24T14:44:21.364Z","slug":"CVE-2026-44805","body":"## Overview\n\nUse after free in Windows Network Controller (NC) Host Agent allows an authorized attacker to deny service locally.\n\n## Affected\n\n- `windows_server_2019 >= 10.0.17763.0 < 10.0.17763.8880`\n- `windows_server_2019_server_core_installation >= 10.0.17763.0 < 10.0.17763.8880`\n- `windows_server_2022 >= 10.0.20348.0 < 10.0.20348.5256`\n- `windows_server_2025 >= 10.0.26100.0 < 10.0.26100.32995`\n- `windows_server_2025_server_core_installation >= 10.0.26100.0 < 10.0.26100.32995`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"sunlit","depthScore":30,"depthScoreParts":{"impact":30.3,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}