{"id":"CVE-2026-33826","aliases":["EUVD-2026-22645","GHSA-495g-jr6v-pch8"],"status":"published","title":"Windows Active Directory Remote Code Execution Vulnerability","description":"Improper input validation in Windows Active Directory allows an authorized attacker to execute code over an adjacent network.","severity":{"version":"3.1","score":8,"vector":"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","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00535,"percentile":0.45455,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":true,"fix_available":false},"cwes":["CWE-20"],"published":"2026-04-14T16:57:50Z","modified":"2026-10-15T15:53:01Z","exploits":[{"source":"pocgithub","id":"kaleth4/CVE-2026-33826","title":"kaleth4/CVE-2026-33826","date":"2026-04-22","url":"https://github.com/kaleth4/CVE-2026-33826"}],"products":[{"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-2026-33826","tags":["vendor-advisory","patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33826"},{"url":"https://github.com/advisories/GHSA-495g-jr6v-pch8"}],"sources":{"cve":[{"id":"CVE-2026-33826","title":"Windows Active Directory Remote Code Execution Vulnerability","description":"Improper input validation in Windows Active Directory allows an authorized attacker to execute code over an adjacent network.","status":"published","published":"2026-04-14T16:57:50.05Z","modified":"2026-10-15T15:53:01.46Z","cvss":[{"version":"3.1","score":8,"vector":"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","level":"high","assessor":"cna"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:20:08.009733Z"}],"euvd":[{"id":"EUVD-2026-22645","description":"Improper input validation in Windows Active Directory allows an authorized attacker to execute code over an adjacent network.","status":"published","published":"2026-04-14T16:57:50Z","modified":"2026-10-15T15:53:01Z","cvss":[{"version":"3.1","score":8,"vector":"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","level":"high"}],"updated_at":"2026-11-02T17:00:12.978606Z"}],"ghsa":[{"id":"GHSA-495g-jr6v-pch8","title":"Improper input validation in Windows Active Directory allows an authorized attacker to execute...","description":"Improper input validation in Windows Active Directory allows an authorized attacker to execute code over an adjacent network.","status":"published","published":"2026-04-14T18:30:43Z","modified":"2026-04-14T18:30:55Z","cvss":[{"version":"3.1","score":8,"vector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T15:07:30.088478Z"}],"nvd":[{"id":"CVE-2026-33826","description":"Improper input validation in Windows Active Directory allows an authorized attacker to execute code over an adjacent network.","status":"published","published":"2026-04-14T18:17:35.267Z","modified":"2026-07-24T22:10:00.14Z","cvss":[{"version":"3.1","score":8,"vector":"CVSS:3.1/AV:A/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:12:14.748836Z"}]}}