{"id":"CVE-2026-120002","kind":"vulnerability","aliases":["CVE-2026-120002"],"related":[],"title":"Microsoft SharePoint: authorization flaw lets a logged-in user gain higher privileges","description":"Incorrect authorization in Microsoft Office SharePoint allows an authorized attacker to elevate privileges over a network.","summary":"Microsoft SharePoint has an incorrect authorization check that lets an authorized attacker raise their privileges over the network. The attacker needs a valid account on the SharePoint server to use it.","severity":"critical","cvss":9.9,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["microsoft","on-premises","sharepoint","vendor"],"not_affected_if":["no-authenticated-users","sharepoint-online"],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T19:20:26+00:00","first_seen_at":"2026-11-10T19:25:07+00:00","triaged_at":"2026-11-10T19:25:33+00:00","updated_at":"2026-11-10T19:32:02+00:00","category":"vendor","confidence":0.3,"triage":{"at":"2026-11-10T19:25:33Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"network","title":"Microsoft SharePoint: authorization flaw lets a logged-in user gain higher privileges","impact":"high","summary":"Microsoft SharePoint has an incorrect authorization check that lets an authorized attacker raise their privileges over the network. The attacker needs a valid account on the SharePoint server to use it.","audience":"businesses","category":"vendor","nicknames":[],"who_cares":["sharepoint","microsoft","on-premises"],"confidence":0.5,"fix_status":"unknown","needs_auth":"yes","worst_case":"Low-privileged user gains higher privileges on the SharePoint server","analyst_note":"Check the Microsoft Security Response Center advisory for CVE-2026-120002 for affected SharePoint versions, patches and any mitigations.","how_to_check":"unknown","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":["sharepoint-online","no-authenticated-users"],"who_is_affected":"Organizations running Microsoft SharePoint Server where users have accounts. The sources do not name affected versions or configuration details, so exposure beyond that is unknown.","user_interaction":"no","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"critical"},"cost_usd":0.00067,"input_tokens":4497,"output_tokens":440,"severity_before":"critical"},"analyst_status":"done","analyst_note":"Check the Microsoft Security Response Center advisory for CVE-2026-120002 for affected SharePoint versions, patches and any mitigations.","search":"'-120002':16A,19A '-2026':15A,18A 'account':49B 'allow':62C 'attack':37B,45B,65C 'author':3A,31B,36B,57C,64C 'check':32B 'cve':14A,17A 'elev':67C 'flaw':4A 'gain':11A 'higher':12A 'incorrect':30B,56C 'let':5A,34B 'log':8A 'logged-in':7A 'microsoft':1A,20B,26B,59C 'need':46B 'network':43B,71C 'offic':60C 'on-premis':21B 'premis':23B 'privileg':13A,40B,68C 'rais':38B 'server':53B 'sharepoint':2A,24B,27B,52B,61C 'use':55B 'user':10A 'valid':48B 'vendor':25B","nicknames":[],"mitigations":[],"who_affected":"Organizations running Microsoft SharePoint Server where users have accounts. The sources do not name affected versions or configuration details, so exposure beyond that is unknown.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"unknown","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["critical","microsoft","onpremises","sharepoint","vendor"],"campaign_type":null,"search_a":"'-120002':16A,19A '-2026':15A,18A 'author':3A 'cve':14A,17A 'flaw':4A 'gain':11A 'higher':12A 'let':5A 'log':8A 'logged-in':7A 'microsoft':1A 'privileg':13A 'sharepoint':2A 'user':10A","search_b":"'account':49B 'attack':37B,45B 'author':31B,36B 'check':32B 'incorrect':30B 'let':34B 'microsoft':20B,26B 'need':46B 'network':43B 'on-premis':21B 'premis':23B 'privileg':40B 'rais':38B 'server':53B 'sharepoint':24B,27B,52B 'use':55B 'valid':48B 'vendor':25B","search_c":"'allow':62C 'attack':65C 'author':57C,64C 'elev':67C 'incorrect':56C 'microsoft':59C 'network':71C 'offic':60C 'privileg':68C 'sharepoint':61C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:20:26+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","cvss_by":"secure@microsoft.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-120002","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-120002","severity":null,"published_at":"2026-11-10T19:20:26+00:00","modified_at":"2026-11-10T19:20:26+00:00","first_seen_at":"2026-11-10T19:25:07+00:00","fetched_at":"2026-11-10T19:25:07+00:00","note":null},{"source":"analyst","external_id":"CVE-2026-120002:2517","url":null,"severity":null,"published_at":"2026-11-10T19:32:02+00:00","modified_at":"2026-11-10T19:32:02+00:00","first_seen_at":"2026-11-10T19:32:02+00:00","fetched_at":"2026-11-10T19:32:02+00:00","note":"MSRC page is JS-only and returned no content; NVD page empty via web-cli. No affected versions, fix or mitigations could be read from a primary source, so nothing verified. Revisit when MSRC text is available (try browser-cli)."}],"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"}