{"id":"CVE-2026-105515","kind":"vulnerability","aliases":["CVE-2026-105515"],"related":[],"title":"Windows Message Queuing: buffer over-read lets remote attacker crash service","description":"Buffer over-read in Windows Message Queuing allows an unauthorized attacker to deny service over a network.","summary":"A buffer over-read in Windows Message Queuing lets an unauthorized attacker over the network make the service fail. The sources describe a denial of service, not code execution.","severity":"high","cvss":7.5,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["infrastructure","msmq","windows"],"not_affected_if":[],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T19:17:50+00:00","first_seen_at":"2026-11-10T19:24:17+00:00","triaged_at":"2026-11-10T19:47:32+00:00","updated_at":"2026-11-10T19:47:32+00:00","category":"infrastructure","confidence":0.6,"triage":{"at":"2026-11-10T19:47:32Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"network","title":"Windows Message Queuing: buffer over-read lets remote attacker crash service","impact":"low","summary":"A buffer over-read in Windows Message Queuing lets an unauthorized attacker over the network make the service fail. The sources describe a denial of service, not code execution.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["windows","msmq"],"confidence":0.6,"fix_status":"unknown","needs_auth":"no","worst_case":"Message Queuing service crashes, denying service to network clients","analyst_note":"Confirm affected Windows builds and whether MSMQ must be enabled, and find the Microsoft advisory for the fixed update.","how_to_check":"- unknown","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":[],"who_is_affected":"Windows machines running the Message Queuing (MSMQ) feature are the systems to look at. The sources do not say which Windows versions or configurations are affected, so unknown.","user_interaction":"no","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000645,"input_tokens":4486,"output_tokens":393,"severity_before":"high"},"analyst_status":"queued","analyst_note":"Confirm affected Windows builds and whether MSMQ must be enabled, and find the Microsoft advisory for the fixed update.","search":"'-105515':15A,18A '-2026':14A,17A 'allow':60C 'attack':10A,34B,63C 'buffer':4A,23B,52C 'code':50B 'crash':11A 'cve':13A,16A 'deni':65C 'denial':46B 'describ':44B 'execut':51B 'fail':41B 'infrastructur':19B 'let':8A,31B 'make':38B 'messag':2A,29B,58C 'msmq':20B 'network':37B,69C 'over-read':5A,24B,53C 'queu':3A,30B,59C 'read':7A,26B,55C 'remot':9A 'servic':12A,40B,48B,66C 'sourc':43B 'unauthor':33B,62C 'window':1A,21B,28B,57C","nicknames":[],"mitigations":[],"who_affected":"Windows machines running the Message Queuing (MSMQ) feature are the systems to look at. The sources do not say which Windows versions or configurations are affected, so unknown.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["high","infrastructure","msmq","windows"],"campaign_type":null,"search_a":"'-105515':15A,18A '-2026':14A,17A 'attack':10A 'buffer':4A 'crash':11A 'cve':13A,16A 'let':8A 'messag':2A 'over-read':5A 'queu':3A 'read':7A 'remot':9A 'servic':12A 'window':1A","search_b":"'attack':34B 'buffer':23B 'code':50B 'denial':46B 'describ':44B 'execut':51B 'fail':41B 'infrastructur':19B 'let':31B 'make':38B 'messag':29B 'msmq':20B 'network':37B 'over-read':24B 'queu':30B 'read':26B 'servic':40B,48B 'sourc':43B 'unauthor':33B 'window':21B,28B","search_c":"'allow':60C 'attack':63C 'buffer':52C 'deni':65C 'messag':58C 'network':69C 'over-read':53C 'queu':59C 'read':55C 'servic':66C 'unauthor':62C 'window':57C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:17:50+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:N/AC:L/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-2026-105515","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-105515","severity":null,"published_at":"2026-11-10T19:17:50+00:00","modified_at":"2026-11-10T19:17:50+00:00","first_seen_at":"2026-11-10T19:24:17+00:00","fetched_at":"2026-11-10T19:24:17+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"}