{"id":"CVE-2026-26183","title":"Remote Access Management service/API (RPC server) Elevation of Privilege Vulnerability","summary":"Improper access control in Windows RPC API allows an authorized attacker to elevate privileges locally.","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C","cvssSource":"cna","cwe":["CWE-284"],"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"},"published":"2026-04-14","updated":"2026-09-25","sourceUpdated":"2026-09-25T17:25:02.379Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-26183","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26183","label":"Remote Access Management service/API (RPC server) Elevation of Privilege Vulnerability"}],"tags":["cve.org"],"epss":0.00298,"epssPercentile":0.20051,"ingestedAt":"2026-09-25T18:14:20.457Z","slug":"CVE-2026-26183","body":"## Overview\n\nImproper access control in Windows RPC API allows an authorized attacker to elevate privileges locally.\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":"twilight","depthScore":43,"depthScoreParts":{"impact":42.9,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}