{"id":"CVE-2026-50078","kind":"vulnerability","aliases":["CVE-2026-50078"],"related":[],"title":"QVM: out-of-bounds read in MSI-X table leaks data or crashes","description":"Out-Of-Bounds Read in the MSI-X table in the QVM could allow an attacker in the guest to cause an information disclosure or a crash of the QVM.","summary":"The QVM hypervisor has an out-of-bounds read in its MSI-X table handling. A guest attacker can read memory they should not see or crash the QVM.","severity":"medium","cvss":4.4,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["infrastructure","qvm","virtualization"],"not_affected_if":[],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T20:19:12+00:00","first_seen_at":"2026-11-10T20:46:05+00:00","triaged_at":"2026-11-10T20:48:12+00:00","updated_at":"2026-11-10T20:48:12+00:00","category":"infrastructure","confidence":0.5,"triage":{"at":"2026-11-10T20:48:12Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"local","title":"QVM: out-of-bounds read in MSI-X table leaks data or crashes","impact":"medium","summary":"The QVM hypervisor has an out-of-bounds read in its MSI-X table handling. A guest attacker can read memory they should not see or crash the QVM.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["qvm","virtualization"],"confidence":0.5,"fix_status":"unknown","needs_auth":"yes","worst_case":"Guest reads hypervisor memory or crashes the QVM instance","analyst_note":"Find the vendor advisory and affected QVM version ranges and fixed versions for CVE-2026-50078; NVD entry at https://nvd.nist.gov/vuln/detail/CVE-2026-50078 has no product data.","how_to_check":"unknown","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":[],"who_is_affected":"Affects systems running QVM, the hypervisor, where a guest VM can reach the MSI-X table emulation. The sources do not name affected versions or which configurations are exposed. unknown","user_interaction":"no","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000671,"input_tokens":4513,"output_tokens":439,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-2026':17A,20A '-50078':18A,21A 'allow':71C 'attack':44B,73C 'bound':5A,33B,59C 'caus':78C 'could':70C 'crash':15A,53B,84C 'cve':16A,19A 'data':13A 'disclosur':81C 'guest':43B,76C 'handl':41B 'hypervisor':27B 'inform':80C 'infrastructur':22B 'leak':12A 'memori':47B 'msi':9A,38B,64C 'msi-x':8A,37B,63C 'out-of-bound':2A,30B,56C 'qvm':1A,23B,26B,55B,69C,87C 'read':6A,34B,46B,60C 'see':51B 'tabl':11A,40B,66C 'virtual':24B 'x':10A,39B,65C","nicknames":[],"mitigations":[],"who_affected":"Affects systems running QVM, the hypervisor, where a guest VM can reach the MSI-X table emulation. The sources do not name affected versions or which configurations are exposed. unknown","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["infrastructure","medium","qvm","virtualization"],"campaign_type":null,"search_a":"'-2026':17A,20A '-50078':18A,21A 'bound':5A 'crash':15A 'cve':16A,19A 'data':13A 'leak':12A 'msi':9A 'msi-x':8A 'out-of-bound':2A 'qvm':1A 'read':6A 'tabl':11A 'x':10A","search_b":"'attack':44B 'bound':33B 'crash':53B 'guest':43B 'handl':41B 'hypervisor':27B 'infrastructur':22B 'memori':47B 'msi':38B 'msi-x':37B 'out-of-bound':30B 'qvm':23B,26B,55B 'read':34B,46B 'see':51B 'tabl':40B 'virtual':24B 'x':39B","search_c":"'allow':71C 'attack':73C 'bound':59C 'caus':78C 'could':70C 'crash':84C 'disclosur':81C 'guest':76C 'inform':80C 'msi':64C 'msi-x':63C 'out-of-bound':56C 'qvm':69C,87C 'read':60C 'tabl':66C 'x':65C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T20:19:12+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:L","cvss_by":"secure@blackberry.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-50078","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-50078","severity":null,"published_at":"2026-11-10T20:19:12+00:00","modified_at":"2026-11-10T20:19:12+00:00","first_seen_at":"2026-11-10T20:46:05+00:00","fetched_at":"2026-11-10T20:46:05+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"}