{"id":"CVE-2026-108402","kind":"vulnerability","aliases":["CVE-2026-108402"],"related":[],"title":"Windows Layer-2 Bridge Network Driver: memory leak lets adjacent attacker cause denial of service","description":"Missing release of memory after effective lifetime in Windows Layer-2 Bridge Network Driver allows an unauthorized attacker to deny service over an adjacent network.","summary":"The Windows Layer-2 Bridge Network Driver does not release memory after it is no longer needed. An unauthorized attacker on the same adjacent network can exhaust memory and deny service.","severity":"medium","cvss":5.3,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["infrastructure","network-bridge","windows"],"not_affected_if":[],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T19:18:03+00:00","first_seen_at":"2026-11-10T19:24:21+00:00","triaged_at":"2026-11-10T20:02:36+00:00","updated_at":"2026-11-10T20:02:36+00:00","category":"infrastructure","confidence":0.5,"triage":{"at":"2026-11-10T20:02:36Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"network","title":"Windows Layer-2 Bridge Network Driver: memory leak lets adjacent attacker cause denial of service","impact":"low","summary":"The Windows Layer-2 Bridge Network Driver does not release memory after it is no longer needed. An unauthorized attacker on the same adjacent network can exhaust memory and deny service.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["windows","network-bridge"],"confidence":0.5,"fix_status":"unknown","needs_auth":"no","worst_case":"Denial of service on the Windows host over the adjacent network","analyst_note":"","how_to_check":"- unknown","plain_action":"","product_name":"","needs_analyst":false,"not_affected_if":[],"who_is_affected":"Systems running Windows with the Layer-2 Bridge Network Driver in use, such as hosts that bridge network adapters. The sources do not say which configurations enable the bridge driver by default. unknown","user_interaction":"no","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000643,"input_tokens":4514,"output_tokens":384,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-108402':18A,21A '-2':3A,30B,68C '-2026':17A,20A 'adjac':10A,50B,81C 'allow':72C 'attack':11A,46B,75C 'bridg':4A,25B,31B,69C 'caus':12A 'cve':16A,19A 'deni':56B,77C 'denial':13A 'driver':6A,33B,71C 'effect':63C 'exhaust':53B 'infrastructur':22B 'layer':2A,29B,67C 'leak':8A 'let':9A 'lifetim':64C 'longer':42B 'memori':7A,37B,54B,61C 'miss':58C 'need':43B 'network':5A,24B,32B,51B,70C,82C 'network-bridg':23B 'releas':36B,59C 'servic':15A,57B,78C 'unauthor':45B,74C 'window':1A,26B,28B,66C","nicknames":[],"mitigations":[],"who_affected":"Systems running Windows with the Layer-2 Bridge Network Driver in use, such as hosts that bridge network adapters. The sources do not say which configurations enable the bridge driver by default. unknown","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["infrastructure","medium","networkbridge","windows"],"campaign_type":null,"search_a":"'-108402':18A,21A '-2':3A '-2026':17A,20A 'adjac':10A 'attack':11A 'bridg':4A 'caus':12A 'cve':16A,19A 'denial':13A 'driver':6A 'layer':2A 'leak':8A 'let':9A 'memori':7A 'network':5A 'servic':15A 'window':1A","search_b":"'-2':30B 'adjac':50B 'attack':46B 'bridg':25B,31B 'deni':56B 'driver':33B 'exhaust':53B 'infrastructur':22B 'layer':29B 'longer':42B 'memori':37B,54B 'need':43B 'network':24B,32B,51B 'network-bridg':23B 'releas':36B 'servic':57B 'unauthor':45B 'window':26B,28B","search_c":"'-2':68C 'adjac':81C 'allow':72C 'attack':75C 'bridg':69C 'deni':77C 'driver':71C 'effect':63C 'layer':67C 'lifetim':64C 'memori':61C 'miss':58C 'network':70C,82C 'releas':59C 'servic':78C 'unauthor':74C 'window':66C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:18:03+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","cvss_by":"secure@microsoft.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-108402","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-108402","severity":null,"published_at":"2026-11-10T19:18:03+00:00","modified_at":"2026-11-10T19:18:07+00:00","first_seen_at":"2026-11-10T19:24:21+00:00","fetched_at":"2026-11-10T19:24:21+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"}