{"id":"CVE-2026-27912","title":"Windows Kerberos Elevation of Privilege Vulnerability","summary":"Improper authorization in Windows Kerberos allows an authorized attacker to elevate privileges over an adjacent network.","severity":"high","cvss":8,"cvssVector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","cvssSource":"cna","cwe":["CWE-285"],"vendor":"Microsoft","product":"Windows Server 2012","affected":["windows_server_2012 >= 6.2.9200.0 < 6.2.9200.26026","windows_server_2012_server_core_installation >= 6.2.9200.0 < 6.2.9200.26026","windows_server_2012_r2 >= 6.3.9600.0 < 6.3.9600.23132","windows_server_2012_r2_server_core_installation >= 6.3.9600.0 < 6.3.9600.23132","windows_server_2016 >= 10.0.14393.0 < 10.0.14393.9060","windows_server_2016_server_core_installation >= 10.0.14393.0 < 10.0.14393.9060","windows_server_2019 >= 10.0.17763.0 < 10.0.17763.8644","windows_server_2019_server_core_installation >= 10.0.17763.0 < 10.0.17763.8644","windows_server_2022 >= 10.0.20348.0 < 10.0.20348.5020","windows_server_2022_23h2_edition_server_core_installation >= 10.0.25398.0 < 10.0.25398.2274","windows_server_2025 >= 10.0.26100.0 < 10.0.26100.32690","windows_server_2025_server_core_installation >= 10.0.26100.0 < 10.0.26100.32690"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-04-13T00:00:00+00:00"},"exploitAvailable":true,"published":"2026-04-14","updated":"2026-09-25","sourceUpdated":"2026-09-25T17:25:48.470Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-27912","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-27912","label":"Windows Kerberos Elevation of Privilege Vulnerability"}],"tags":["cve.org","exploit-available"],"epss":0.00427,"epssPercentile":0.3425,"exploits":{"github":3,"githubRepos":["https://github.com/Semperis-Community/ResetNightmare","https://github.com/mihat2/ResetNightmare-impacket","https://github.com/oxstussz-eng/Kerberos-CVE-2026-27912"],"checkedAt":"2026-09-25T18:14:55.045Z"},"ingestedAt":"2026-09-25T18:14:20.430Z","slug":"CVE-2026-27912","body":"## Overview\n\nImproper authorization in Windows Kerberos allows an authorized attacker to elevate privileges over an adjacent network.\n\n## Affected\n\n- `windows_server_2012 >= 6.2.9200.0 < 6.2.9200.26026`\n- `windows_server_2012_server_core_installation >= 6.2.9200.0 < 6.2.9200.26026`\n- `windows_server_2012_r2 >= 6.3.9600.0 < 6.3.9600.23132`\n- `windows_server_2012_r2_server_core_installation >= 6.3.9600.0 < 6.3.9600.23132`\n- `windows_server_2016 >= 10.0.14393.0 < 10.0.14393.9060`\n- `windows_server_2016_server_core_installation >= 10.0.14393.0 < 10.0.14393.9060`\n- `windows_server_2019 >= 10.0.17763.0 < 10.0.17763.8644`\n- `windows_server_2019_server_core_installation >= 10.0.17763.0 < 10.0.17763.8644`\n- `windows_server_2022 >= 10.0.20348.0 < 10.0.20348.5020`\n- `windows_server_2022_23h2_edition_server_core_installation >= 10.0.25398.0 < 10.0.25398.2274`\n- `windows_server_2025 >= 10.0.26100.0 < 10.0.26100.32690`\n- `windows_server_2025_server_core_installation >= 10.0.26100.0 < 10.0.26100.32690`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"midnight","depthScore":56,"depthScoreParts":{"impact":44,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[]}