{"id":"CVE-2026-112986","kind":"vulnerability","aliases":["CVE-2026-112986"],"related":[],"title":"Windows DWM Core Library: authorized local user can gain higher privileges","description":"No cwe for this issue in Windows DWM Core Library allows an authorized attacker to elevate privileges locally.","summary":"A flaw in the Windows Desktop Window Manager Core Library lets a user who already has an account on the machine raise their privileges. Successful exploitation gives the attacker system-level control of that Windows host.","severity":"high","cvss":7.0,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["infrastructure","self-hosted","windows"],"not_affected_if":["no-local-accounts","patched-windows"],"how_to_check":"- Run `winver` on the Windows machine and compare the build against Microsoft's security update guide for this CVE\n- Check Windows Update history for the latest cumulative update installed","fix":null,"status":"open","published_at":"2026-11-10T19:18:51+00:00","first_seen_at":"2026-11-10T19:24:37+00:00","triaged_at":"2026-11-10T19:53:27+00:00","updated_at":"2026-11-10T19:53:27+00:00","category":"infrastructure","confidence":0.4,"triage":{"at":"2026-11-10T19:53:27Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"local","title":"Windows DWM Core Library: authorized local user can gain higher privileges","impact":"high","summary":"A flaw in the Windows Desktop Window Manager Core Library lets a user who already has an account on the machine raise their privileges. Successful exploitation gives the attacker system-level control of that Windows host.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["windows","self-hosted"],"confidence":0.4,"fix_status":"unknown","needs_auth":"yes","worst_case":"local user gains system-level privileges on the Windows host","analyst_note":"Check the Microsoft Security Update Guide entry for CVE-2026-112986 for affected builds and the fixed update; the NVD record has no CWE and no fix details here.","how_to_check":"- Run `winver` on the Windows machine and compare the build against Microsoft's security update guide for this CVE\n- Check Windows Update history for the latest cumulative update installed","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":["no-local-accounts","patched-windows"],"who_is_affected":"Windows machines where more than one person or service has a local login, since the attacker must already be authorized on the system. Single-user machines with no untrusted local accounts face lower practical risk. The sources do not name specific Windows builds.","user_interaction":"no","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.0007,"input_tokens":4490,"output_tokens":501,"severity_before":"high"},"analyst_status":"queued","analyst_note":"Check the Microsoft Security Update Guide entry for CVE-2026-112986 for affected builds and the fixed update; the NVD record has no CWE and no fix details here.","search":"'-112986':14A,17A '-2026':13A,16A 'account':40B 'allow':70C 'alreadi':37B 'attack':51B,73C 'author':5A,72C 'control':55B 'core':3A,31B,68C 'cve':12A,15A 'cwe':61C 'desktop':28B 'dwm':2A,67C 'elev':75C 'exploit':48B 'flaw':24B 'gain':9A 'give':49B 'higher':10A 'host':21B,59B 'infrastructur':18B 'issu':64C 'let':33B 'level':54B 'librari':4A,32B,69C 'local':6A,77C 'machin':43B 'manag':30B 'privileg':11A,46B,76C 'rais':44B 'self':20B 'self-host':19B 'success':47B 'system':53B 'system-level':52B 'user':7A,35B 'window':1A,22B,27B,29B,58B,66C","nicknames":[],"mitigations":[],"who_affected":"Windows machines where more than one person or service has a local login, since the attacker must already be authorized on the system. Single-user machines with no untrusted local accounts face lower practical risk. The sources do not name specific Windows builds.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["high","infrastructure","selfhosted","windows"],"campaign_type":null,"search_a":"'-112986':14A,17A '-2026':13A,16A 'author':5A 'core':3A 'cve':12A,15A 'dwm':2A 'gain':9A 'higher':10A 'librari':4A 'local':6A 'privileg':11A 'user':7A 'window':1A","search_b":"'account':40B 'alreadi':37B 'attack':51B 'control':55B 'core':31B 'desktop':28B 'exploit':48B 'flaw':24B 'give':49B 'host':21B,59B 'infrastructur':18B 'let':33B 'level':54B 'librari':32B 'machin':43B 'manag':30B 'privileg':46B 'rais':44B 'self':20B 'self-host':19B 'success':47B 'system':53B 'system-level':52B 'user':35B 'window':22B,27B,29B,58B","search_c":"'allow':70C 'attack':73C 'author':72C 'core':68C 'cwe':61C 'dwm':67C 'elev':75C 'issu':64C 'librari':69C 'local':77C 'privileg':76C 'window':66C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:18:51+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-2026-112986","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-112986","severity":null,"published_at":"2026-11-10T19:18:51+00:00","modified_at":"2026-11-10T19:18:51+00:00","first_seen_at":"2026-11-10T19:24:37+00:00","fetched_at":"2026-11-10T19:24:37+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"}