{"id":"CVE-2026-26183","aliases":["EUVD-2026-22428","GHSA-w9q8-v7fh-ff6x"],"status":"published","title":"Remote Access Management service/API (RPC server) Elevation of Privilege Vulnerability","description":"Improper access control in Windows RPC API allows an authorized attacker to elevate privileges locally.","severity":{"version":"3.1","score":7.8,"vector":"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","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00256,"percentile":0.17366,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-284"],"published":"2026-04-14T16:57:08Z","modified":"2026-10-26T21:10:00Z","products":[{"vendor":"microsoft","product":"windows server 2012"},{"vendor":"microsoft","product":"windows server 2012 (server core installation)"},{"vendor":"microsoft","product":"windows server 2012 r2"},{"vendor":"microsoft","product":"windows server 2012 r2 (server core installation)"},{"vendor":"microsoft","product":"windows server 2016"},{"vendor":"microsoft","product":"windows server 2016 (server core installation)"},{"vendor":"microsoft","product":"windows server 2019"},{"vendor":"microsoft","product":"windows server 2019 (server core installation)"},{"vendor":"microsoft","product":"windows server 2022"},{"vendor":"microsoft","product":"windows server 2022, 23h2 edition (server core installation)"},{"vendor":"microsoft","product":"windows server 2025"},{"vendor":"microsoft","product":"windows server 2025 (server core installation)"},{"vendor":"microsoft","product":"windows_server_2012"},{"vendor":"microsoft","product":"windows_server_2016"},{"vendor":"microsoft","product":"windows_server_2019"},{"vendor":"microsoft","product":"windows_server_2022"},{"vendor":"microsoft","product":"windows_server_2022_23h2"},{"vendor":"microsoft","product":"windows_server_2025"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-26183","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-26183"},{"url":"https://github.com/advisories/GHSA-w9q8-v7fh-ff6x"}],"sources":{"cve":[{"id":"CVE-2026-26183","title":"Remote Access Management service/API (RPC server) Elevation of Privilege Vulnerability","description":"Improper access control in Windows RPC API allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-04-14T16:57:08.213Z","modified":"2026-10-15T15:52:25.778Z","cvss":[{"version":"3.1","score":7.8,"vector":"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","level":"high","assessor":"cna"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T13:38:20.971157Z"}],"euvd":[{"id":"EUVD-2026-22428","description":"Improper access control in Windows RPC API allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-04-14T16:57:08Z","modified":"2026-10-15T15:52:25Z","cvss":[{"version":"3.1","score":7.8,"vector":"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","level":"high"}],"updated_at":"2026-11-02T17:00:13.422137Z"}],"ghsa":[{"id":"GHSA-w9q8-v7fh-ff6x","title":"Improper access control in Windows RPC API allows an authorized attacker to elevate privileges...","description":"Improper access control in Windows RPC API allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-04-14T18:30:38Z","modified":"2026-04-14T18:30:49Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T15:07:29.526942Z"}],"nvd":[{"id":"CVE-2026-26183","description":"Improper access control in Windows RPC API allows an authorized attacker to elevate privileges locally.","status":"published","published":"2026-04-14T18:16:55.187Z","modified":"2026-10-26T21:10:00.17Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-284"],"updated_at":"2026-11-02T14:12:14.748836Z"}]}}