{"id":"CVE-2026-95871","kind":"vulnerability","aliases":["CVE-2026-95871"],"related":[],"title":"Windows Broadcast DVR service heap overflow lets a local user gain higher privileges","description":"Heap-based buffer overflow in Windows Broadcast DVR User Service allows an authorized attacker to elevate privileges locally.","summary":"A heap-based buffer overflow in the Windows Broadcast DVR User Service lets an authorized local user elevate their privileges. An attacker who already has a low-privilege account on the machine can gain higher rights, such as SYSTEM.","severity":"high","cvss":7.0,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["infrastructure","windows"],"not_affected_if":["no-local-accounts"],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T19:21:39+00:00","first_seen_at":"2026-11-10T19:25:22+00:00","triaged_at":"2026-11-10T19:49:54+00:00","updated_at":"2026-11-10T19:49:54+00:00","category":"infrastructure","confidence":0.6,"triage":{"at":"2026-11-10T19:49:54Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"local","title":"Windows Broadcast DVR service heap overflow lets a local user gain higher privileges","impact":"high","summary":"A heap-based buffer overflow in the Windows Broadcast DVR User Service lets an authorized local user elevate their privileges. An attacker who already has a low-privilege account on the machine can gain higher rights, such as SYSTEM.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["windows"],"confidence":0.6,"fix_status":"unknown","needs_auth":"yes","worst_case":"local user gains SYSTEM-level privileges on the machine","analyst_note":"Check the Microsoft Security Response Center advisory for CVE-2026-95871 for affected Windows builds, the patch KB, and whether the Broadcast DVR service ships enabled by default.","how_to_check":"unknown","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":["no-local-accounts"],"who_is_affected":"Affects Windows systems running the Broadcast DVR User Service. Exposure requires an attacker who already has an authorized local account on the machine; remote attackers without a login are not described as able to exploit it. The sources do not list affected Windows builds or whether the service is enabled by default.","user_interaction":"no","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000691,"input_tokens":4503,"output_tokens":482,"severity_before":"high"},"analyst_status":"queued","analyst_note":"Check the Microsoft Security Response Center advisory for CVE-2026-95871 for affected Windows builds, the patch KB, and whether the Broadcast DVR service ships enabled by default.","search":"'-2026':15A,18A '-95871':16A,19A 'account':52B 'allow':74C 'alreadi':46B 'attack':44B,77C 'author':37B,76C 'base':25B,65C 'broadcast':2A,31B,70C 'buffer':26B,66C 'cve':14A,17A 'dvr':3A,32B,71C 'elev':40B,79C 'gain':11A,57B 'heap':5A,24B,64C 'heap-bas':23B,63C 'higher':12A,58B 'infrastructur':20B 'let':7A,35B 'local':9A,38B,81C 'low':50B 'low-privileg':49B 'machin':55B 'overflow':6A,27B,67C 'privileg':13A,42B,51B,80C 'right':59B 'servic':4A,34B,73C 'system':62B 'user':10A,33B,39B,72C 'window':1A,21B,30B,69C","nicknames":[],"mitigations":[],"who_affected":"Affects Windows systems running the Broadcast DVR User Service. Exposure requires an attacker who already has an authorized local account on the machine; remote attackers without a login are not described as able to exploit it. The sources do not list affected Windows builds or whether the service is enabled by default.","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":"'-2026':15A,18A '-95871':16A,19A 'broadcast':2A 'cve':14A,17A 'dvr':3A 'gain':11A 'heap':5A 'higher':12A 'let':7A 'local':9A 'overflow':6A 'privileg':13A 'servic':4A 'user':10A 'window':1A","search_b":"'account':52B 'alreadi':46B 'attack':44B 'author':37B 'base':25B 'broadcast':31B 'buffer':26B 'dvr':32B 'elev':40B 'gain':57B 'heap':24B 'heap-bas':23B 'higher':58B 'infrastructur':20B 'let':35B 'local':38B 'low':50B 'low-privileg':49B 'machin':55B 'overflow':27B 'privileg':42B,51B 'right':59B 'servic':34B 'system':62B 'user':33B,39B 'window':21B,30B","search_c":"'allow':74C 'attack':77C 'author':76C 'base':65C 'broadcast':70C 'buffer':66C 'dvr':71C 'elev':79C 'heap':64C 'heap-bas':63C 'local':81C 'overflow':67C 'privileg':80C 'servic':73C 'user':72C 'window':69C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:21:39+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-2026-95871","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-95871","severity":null,"published_at":"2026-11-10T19:21:39+00:00","modified_at":"2026-11-10T19:21:40+00:00","first_seen_at":"2026-11-10T19:25:22+00:00","fetched_at":"2026-11-10T19:25:22+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"}