{"id":"CVE-2026-119937","kind":"vulnerability","aliases":["CVE-2026-119937"],"related":[],"title":"Microsoft Streaming Service: heap overflow lets an authorized user gain privileges","description":"Heap-based buffer overflow in Microsoft Streaming Service allows an authorized attacker to elevate privileges with a physical attack.","summary":"A heap-based buffer overflow in the Microsoft Streaming Service lets a user who already has authorized access raise their privileges. The description says the attack requires physical access to the machine.","severity":"medium","cvss":6.6,"epss":null,"exploited":false,"exploited_at":null,"products":[{"name":"Microsoft Streaming Service","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["infrastructure","microsoft-streaming-service","windows"],"not_affected_if":[],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T19:20:16+00:00","first_seen_at":"2026-11-10T19:25:03+00:00","triaged_at":"2026-11-10T19:55:57+00:00","updated_at":"2026-11-10T19:55:57+00:00","category":"infrastructure","confidence":0.4,"triage":{"at":"2026-11-10T19:55:57Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"local","title":"Microsoft Streaming Service: heap overflow lets an authorized user gain privileges","impact":"high","summary":"A heap-based buffer overflow in the Microsoft Streaming Service lets a user who already has authorized access raise their privileges. The description says the attack requires physical access to the machine.","audience":"everyone","category":"infrastructure","nicknames":[],"who_cares":["windows","microsoft-streaming-service"],"confidence":0.4,"fix_status":"unknown","needs_auth":"yes","worst_case":"Authorized user gains higher system privileges on the device","analyst_note":"Confirm the affected Windows builds and the Microsoft patch from the NVD or MSRC entry; the sources give no versions or fix.","how_to_check":"unknown","plain_action":"","product_name":"Microsoft Streaming Service","needs_analyst":true,"not_affected_if":[],"who_is_affected":"unknown","user_interaction":"unknown","product_ecosystem":"vendor","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000645,"input_tokens":4504,"output_tokens":389,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-119937':14A,17A '-2026':13A,16A 'access':45B,56B 'allow':69C 'alreadi':42B 'attack':53B,72C,79C 'author':8A,44B,71C 'base':30B,62C 'buffer':31B,63C 'cve':12A,15A 'descript':50B 'elev':74C 'gain':10A 'heap':4A,29B,61C 'heap-bas':28B,60C 'infrastructur':21B 'let':6A,38B 'machin':59B 'microsoft':1A,18A,23B,35B,66C 'microsoft-streaming-servic':22B 'overflow':5A,32B,64C 'physic':55B,78C 'privileg':11A,48B,75C 'rais':46B 'requir':54B 'say':51B 'servic':3A,25B,37B,68C 'service':20A 'stream':2A,24B,36B,67C 'streaming':19A 'user':9A,40B 'window':26B","nicknames":[],"mitigations":[],"who_affected":null,"tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"everyone","plain_action":null,"pkeys":["microsoftstreamingservice","streamingservice"],"ptokens":["microsoft","service","streaming"],"labels":["infrastructure","medium","microsoftstreamingservice","vendor","windows"],"campaign_type":null,"search_a":"'-119937':14A,17A '-2026':13A,16A 'author':8A 'cve':12A,15A 'gain':10A 'heap':4A 'let':6A 'microsoft':1A,18A 'overflow':5A 'privileg':11A 'servic':3A 'service':20A 'stream':2A 'streaming':19A 'user':9A","search_b":"'access':45B,56B 'alreadi':42B 'attack':53B 'author':44B 'base':30B 'buffer':31B 'descript':50B 'heap':29B 'heap-bas':28B 'infrastructur':21B 'let':38B 'machin':59B 'microsoft':23B,35B 'microsoft-streaming-servic':22B 'overflow':32B 'physic':55B 'privileg':48B 'rais':46B 'requir':54B 'say':51B 'servic':25B,37B 'stream':24B,36B 'user':40B 'window':26B","search_c":"'allow':69C 'attack':72C,79C 'author':71C 'base':62C 'buffer':63C 'elev':74C 'heap':61C 'heap-bas':60C 'microsoft':66C 'overflow':64C 'physic':78C 'privileg':75C 'servic':68C 'stream':67C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:20:16+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:P/AC:L/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-2026-119937","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-119937","severity":null,"published_at":"2026-11-10T19:20:16+00:00","modified_at":"2026-11-10T19:20:16+00:00","first_seen_at":"2026-11-10T19:25:03+00:00","fetched_at":"2026-11-10T19:25:03+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"}