{"id":"CVE-2026-85862","kind":"vulnerability","aliases":["CVE-2026-85862"],"related":[],"title":"Windows Error Reporting: double free lets a local user gain higher privileges","description":"Double free in Windows Error Reporting allows an authorized attacker to elevate privileges locally.","summary":"A double free bug in Windows Error Reporting lets an attacker who already has a local account raise their privileges. The sources report a CVSS score of 7.0 and do not describe the exact exploit path.","severity":"high","cvss":7.0,"epss":null,"exploited":false,"exploited_at":null,"products":[{"name":"Windows Error Reporting","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["infrastructure","windows","windows-error-reporting"],"not_affected_if":[],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T19:21:25+00:00","first_seen_at":"2026-11-10T19:25:18+00:00","triaged_at":"2026-11-10T19:50:05+00:00","updated_at":"2026-11-10T19:50:05+00:00","category":"infrastructure","confidence":0.5,"triage":{"at":"2026-11-10T19:50:05Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"local","title":"Windows Error Reporting: double free lets a local user gain higher privileges","impact":"high","summary":"A double free bug in Windows Error Reporting lets an attacker who already has a local account raise their privileges. The sources report a CVSS score of 7.0 and do not describe the exact exploit path.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["windows","windows-error-reporting"],"confidence":0.5,"fix_status":"unknown","needs_auth":"yes","worst_case":"local user gains elevated privileges on the Windows machine","analyst_note":"Find the Microsoft advisory for CVE-2026-85862 to list affected Windows builds and the patch, starting from the NVD page https://nvd.nist.gov/vuln/detail/CVE-2026-85862.","how_to_check":"- unknown","plain_action":"","product_name":"Windows Error Reporting","needs_analyst":true,"not_affected_if":[],"who_is_affected":"Windows machines with Error Reporting present are the subject of this flaw; the attacker must already be authorized on the machine, so shared multi-user systems carry the most risk. The sources do not name affected Windows builds, so the team should check the vendor advisory for its versions.","user_interaction":"unknown","product_ecosystem":"vendor","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000696,"input_tokens":4478,"output_tokens":496,"severity_before":"high"},"analyst_status":"queued","analyst_note":"Find the Microsoft advisory for CVE-2026-85862 to list affected Windows builds and the patch, starting from the NVD page https://nvd.nist.gov/vuln/detail/CVE-2026-85862.","search":"'-2026':14A,17A '-85862':15A,18A '7.0':55B 'account':44B 'allow':70C 'alreadi':40B 'attack':38B,73C 'author':72C 'bug':31B 'cve':13A,16A 'cvss':52B 'describ':59B 'doubl':4A,29B,64C 'elev':75C 'error':2A,20A,26B,34B,68C 'exact':61B 'exploit':62B 'free':5A,30B,65C 'gain':10A 'higher':11A 'infrastructur':22B 'let':6A,36B 'local':8A,43B,77C 'path':63B 'privileg':12A,47B,76C 'rais':45B 'report':3A,27B,35B,50B,69C 'reporting':21A 'score':53B 'sourc':49B 'user':9A 'window':1A,23B,25B,33B,67C 'windows':19A 'windows-error-report':24B","nicknames":[],"mitigations":[],"who_affected":"Windows machines with Error Reporting present are the subject of this flaw; the attacker must already be authorized on the machine, so shared multi-user systems carry the most risk. The sources do not name affected Windows builds, so the team should check the vendor advisory for its versions.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":["errorreporting","windowserrorreporting"],"ptokens":["error","reporting","windows"],"labels":["high","infrastructure","vendor","windows","windowserrorreporting"],"campaign_type":null,"search_a":"'-2026':14A,17A '-85862':15A,18A 'cve':13A,16A 'doubl':4A 'error':2A,20A 'free':5A 'gain':10A 'higher':11A 'let':6A 'local':8A 'privileg':12A 'report':3A 'reporting':21A 'user':9A 'window':1A 'windows':19A","search_b":"'7.0':55B 'account':44B 'alreadi':40B 'attack':38B 'bug':31B 'cvss':52B 'describ':59B 'doubl':29B 'error':26B,34B 'exact':61B 'exploit':62B 'free':30B 'infrastructur':22B 'let':36B 'local':43B 'path':63B 'privileg':47B 'rais':45B 'report':27B,35B,50B 'score':53B 'sourc':49B 'window':23B,25B,33B 'windows-error-report':24B","search_c":"'allow':70C 'attack':73C 'author':72C 'doubl':64C 'elev':75C 'error':68C 'free':65C 'local':77C 'privileg':76C 'report':69C 'window':67C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:21:25+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","cvss_by":"secure@microsoft.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-85862","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-85862","severity":null,"published_at":"2026-11-10T19:21:25+00:00","modified_at":"2026-11-10T19:21:25+00:00","first_seen_at":"2026-11-10T19:25:18+00:00","fetched_at":"2026-11-10T19:25:18+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"}