{"id":"CVE-2026-123387","kind":"vulnerability","aliases":["CVE-2026-123387"],"related":[],"title":"Windows Active Directory: command injection lets an authorized user gain privileges","description":"Improper neutralization of special elements used in a command ('command injection') in Windows Active Directory allows an authorized attacker to elevate privileges over a network.","summary":"Windows Active Directory does not neutralize special characters in a command, which lets an authorized attacker run commands. An attacker with a low-privilege account on the network can elevate privileges.","severity":"high","cvss":8.0,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["active-directory","domain-controllers","infrastructure","windows"],"not_affected_if":[],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T19:20:42+00:00","first_seen_at":"2026-11-10T19:25:12+00:00","triaged_at":"2026-11-10T19:36:05+00:00","updated_at":"2026-11-10T19:36:05+00:00","category":"infrastructure","confidence":0.5,"triage":{"at":"2026-11-10T19:36:05Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"network","title":"Windows Active Directory: command injection lets an authorized user gain privileges","impact":"high","summary":"Windows Active Directory does not neutralize special characters in a command, which lets an authorized attacker run commands. An attacker with a low-privilege account on the network can elevate privileges.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["windows","active-directory","domain-controllers"],"confidence":0.5,"fix_status":"unknown","needs_auth":"yes","worst_case":"attacker gains elevated privileges over the network","analyst_note":"Find the Microsoft advisory for CVE-2026-123387 to confirm affected Windows versions, patched builds and any config prerequisites.","how_to_check":"- unknown","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":[],"who_is_affected":"Organizations that run Windows Active Directory domain controllers. The sources do not say which Windows builds or configurations are affected, so the exact exposure is unknown.","user_interaction":"unknown","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000652,"input_tokens":4496,"output_tokens":404,"severity_before":"high"},"analyst_status":"queued","analyst_note":"Find the Microsoft advisory for CVE-2026-123387 to confirm affected Windows versions, patched builds and any config prerequisites.","search":"'-123387':14A,17A '-2026':13A,16A 'account':51B 'activ':2A,19B,27B,71C 'active-directori':18B 'allow':73C 'attack':41B,45B,76C 'author':8A,40B,75C 'charact':33B 'command':4A,36B,43B,66C,67C 'control':23B 'cve':12A,15A 'directori':3A,20B,28B,72C 'domain':22B 'domain-control':21B 'element':62C 'elev':56B,78C 'gain':10A 'improp':58C 'infrastructur':24B 'inject':5A,68C 'let':6A,38B 'low':49B 'low-privileg':48B 'network':54B,82C 'neutral':31B,59C 'privileg':11A,50B,57B,79C 'run':42B 'special':32B,61C 'use':63C 'user':9A 'window':1A,25B,26B,70C","nicknames":[],"mitigations":[],"who_affected":"Organizations that run Windows Active Directory domain controllers. The sources do not say which Windows builds or configurations are affected, so the exact exposure is unknown.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["activedirectory","domaincontrollers","high","infrastructure","windows"],"campaign_type":null,"search_a":"'-123387':14A,17A '-2026':13A,16A 'activ':2A 'author':8A 'command':4A 'cve':12A,15A 'directori':3A 'gain':10A 'inject':5A 'let':6A 'privileg':11A 'user':9A 'window':1A","search_b":"'account':51B 'activ':19B,27B 'active-directori':18B 'attack':41B,45B 'author':40B 'charact':33B 'command':36B,43B 'control':23B 'directori':20B,28B 'domain':22B 'domain-control':21B 'elev':56B 'infrastructur':24B 'let':38B 'low':49B 'low-privileg':48B 'network':54B 'neutral':31B 'privileg':50B,57B 'run':42B 'special':32B 'window':25B,26B","search_c":"'activ':71C 'allow':73C 'attack':76C 'author':75C 'command':66C,67C 'directori':72C 'element':62C 'elev':78C 'improp':58C 'inject':68C 'network':82C 'neutral':59C 'privileg':79C 'special':61C 'use':63C 'window':70C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:20:42+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H","cvss_by":"secure@microsoft.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-123387","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-123387","severity":null,"published_at":"2026-11-10T19:20:42+00:00","modified_at":"2026-11-10T19:20:42+00:00","first_seen_at":"2026-11-10T19:25:12+00:00","fetched_at":"2026-11-10T19:25:12+00:00","note":null}],"documents":[],"disclosures":[],"exploit_sources":[],"notice":"Free to read, with fair use of about 60 pages a minute. For higher limits or API access: sales@infrastack.ai"}