{"id":"CVE-2026-112800","kind":"vulnerability","aliases":["CVE-2026-112800"],"related":[],"title":"Windows Diagnostic Policy Service: heap overflow lets a local user gain higher privileges","description":"Heap-based buffer overflow in Windows Diagnostic Policy Service allows an authorized attacker to elevate privileges locally.","summary":"A heap-based buffer overflow in the Windows Diagnostic Policy Service lets an already-authorized local user elevate their privileges. An attacker who gets a foothold on a Windows machine could gain higher-level control of that system.","severity":"high","cvss":7.0,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["infrastructure","windows"],"not_affected_if":[],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T19:18:42+00:00","first_seen_at":"2026-11-10T19:24:33+00:00","triaged_at":"2026-11-10T19:53:34+00:00","updated_at":"2026-11-10T19:53:34+00:00","category":"infrastructure","confidence":0.6,"triage":{"at":"2026-11-10T19:53:34Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"local","title":"Windows Diagnostic Policy Service: heap overflow lets a local user gain higher privileges","impact":"high","summary":"A heap-based buffer overflow in the Windows Diagnostic Policy Service lets an already-authorized local user elevate their privileges. An attacker who gets a foothold on a Windows machine could gain higher-level control of that system.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["windows"],"confidence":0.6,"fix_status":"unknown","needs_auth":"yes","worst_case":"Local user gains elevated privileges on the Windows machine.","analyst_note":"Check the Microsoft Security Update Guide entry for CVE-2026-112800 for affected Windows builds and the patch name.","how_to_check":"unknown","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":[],"who_is_affected":"Affected systems are Windows machines running the Diagnostic Policy Service; the risk is local, so the attacker must already have an authorized account on the machine. The sources do not list affected Windows builds or give a patch, so the exact exposure is unknown.","user_interaction":"no","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000671,"input_tokens":4503,"output_tokens":442,"severity_before":"high"},"analyst_status":"queued","analyst_note":"Check the Microsoft Security Update Guide entry for CVE-2026-112800 for affected Windows builds and the patch name.","search":"'-112800':16A,19A '-2026':15A,18A 'allow':73C 'alreadi':37B 'already-author':36B 'attack':45B,76C 'author':38B,75C 'base':25B,65C 'buffer':26B,66C 'control':59B 'could':54B 'cve':14A,17A 'diagnost':2A,31B,70C 'elev':41B,78C 'foothold':49B 'gain':11A,55B 'get':47B 'heap':5A,24B,64C 'heap-bas':23B,63C 'higher':12A,57B 'higher-level':56B 'infrastructur':20B 'let':7A,34B 'level':58B 'local':9A,39B,80C 'machin':53B 'overflow':6A,27B,67C 'polici':3A,32B,71C 'privileg':13A,43B,79C 'servic':4A,33B,72C 'system':62B 'user':10A,40B 'window':1A,21B,30B,52B,69C","nicknames":[],"mitigations":[],"who_affected":"Affected systems are Windows machines running the Diagnostic Policy Service; the risk is local, so the attacker must already have an authorized account on the machine. The sources do not list affected Windows builds or give a patch, so the exact exposure is unknown.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["high","infrastructure","windows"],"campaign_type":null,"search_a":"'-112800':16A,19A '-2026':15A,18A 'cve':14A,17A 'diagnost':2A 'gain':11A 'heap':5A 'higher':12A 'let':7A 'local':9A 'overflow':6A 'polici':3A 'privileg':13A 'servic':4A 'user':10A 'window':1A","search_b":"'alreadi':37B 'already-author':36B 'attack':45B 'author':38B 'base':25B 'buffer':26B 'control':59B 'could':54B 'diagnost':31B 'elev':41B 'foothold':49B 'gain':55B 'get':47B 'heap':24B 'heap-bas':23B 'higher':57B 'higher-level':56B 'infrastructur':20B 'let':34B 'level':58B 'local':39B 'machin':53B 'overflow':27B 'polici':32B 'privileg':43B 'servic':33B 'system':62B 'user':40B 'window':21B,30B,52B","search_c":"'allow':73C 'attack':76C 'author':75C 'base':65C 'buffer':66C 'diagnost':70C 'elev':78C 'heap':64C 'heap-bas':63C 'local':80C 'overflow':67C 'polici':71C 'privileg':79C 'servic':72C 'window':69C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:18:42+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-2026-112800","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-112800","severity":null,"published_at":"2026-11-10T19:18:42+00:00","modified_at":"2026-11-10T19:18:42+00:00","first_seen_at":"2026-11-10T19:24:33+00:00","fetched_at":"2026-11-10T19:24:33+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"}