{"id":"CVE-2026-59771","kind":"vulnerability","aliases":["CVE-2026-59771"],"related":[],"title":"Intel TDX MigTD: virtio-serial array index flaw allows denial of service","description":"Improper validation of array index in the MigTD's virtio-serial driver for the Intel(R) TDX Migration Trust Domain (MigTD) within Ring 0: Hypervisor may allow a denial of service. System software adversary with a privileged user combined with a low complexity attack may enable denial of service. This result may potentially occur via local access when attack requirements are not present without special internal knowledge and requires no user interaction. The potential vulnerability may impact the confidentiality (none), integrity (none) and availability (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.","summary":"The MigTD migration trust domain's virtio-serial driver does not validate an array index, so a privileged system-software adversary can crash it. The impact is denial of service only, with no confidentiality or integrity loss stated.","severity":"medium","cvss":6.7,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["confidential-computing","infrastructure","intel-tdx","migtd","virtualization"],"not_affected_if":["no-tdx-migration"],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T18:17:42+00:00","first_seen_at":"2026-11-10T18:22:59+00:00","triaged_at":"2026-11-10T18:24:49+00:00","updated_at":"2026-11-10T18:24:49+00:00","category":"infrastructure","confidence":0.6,"triage":{"at":"2026-11-10T18:24:49Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"local","title":"Intel TDX MigTD: virtio-serial array index flaw allows denial of service","impact":"low","summary":"The MigTD migration trust domain's virtio-serial driver does not validate an array index, so a privileged system-software adversary can crash it. The impact is denial of service only, with no confidentiality or integrity loss stated.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["intel-tdx","migtd","virtualization","confidential-computing"],"confidence":0.6,"fix_status":"unknown","needs_auth":"yes","worst_case":"Migration trust domain crashes, causing denial of service","analyst_note":"Find the Intel security advisory and list affected and fixed MigTD versions; the NVD entry alone gives no product ranges.","how_to_check":"unknown","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":["no-tdx-migration"],"who_is_affected":"Affects Intel TDX deployments that run the MigTD migration trust domain with its virtio-serial driver. The sources do not state which MigTD versions are affected or which fixed version to move to. Teams not running Intel TDX live migration can skip it.","user_interaction":"no","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000698,"input_tokens":4671,"output_tokens":461,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-2026':15A,18A '-59771':16A,19A '0':93C 'access':126C 'adversari':51B,103C 'allow':10A,96C 'array':7A,43B,72C 'attack':113C,128C 'avail':153C,168C 'combin':108C 'complex':112C 'comput':22B 'confidenti':21B,64B,148C,163C 'confidential-comput':20B 'crash':53B 'cve':14A,17A 'denial':11A,58B,98C,116C 'domain':33B,89C 'driver':38B,81C 'enabl':115C 'flaw':9A 'high':154C 'hypervisor':94C 'impact':56B,146C,170C 'improp':69C 'index':8A,44B,73C 'infrastructur':23B 'integr':66B,150C,165C 'intel':1A,25B,84C 'intel-tdx':24B 'interact':141C 'intern':135C 'knowledg':136C 'local':125C 'loss':67B 'low':111C 'may':95C,114C,121C,145C 'migrat':31B,87C 'migtd':3A,27B,30B,76C,90C 'none':149C,151C,164C,166C,169C 'occur':123C 'potenti':122C,143C 'present':132C 'privileg':47B,106C 'r':85C 'requir':129C,138C 'result':120C,159C 'ring':92C 'serial':6A,37B,80C 'servic':13A,60B,100C,118C 'softwar':50B,102C 'special':134C 'state':68B 'subsequ':161C 'system':49B,101C,158C,162C 'system-softwar':48B 'tdx':2A,26B,86C 'trust':32B,88C 'user':107C,140C 'valid':41B,70C 'via':124C 'virtio':5A,36B,79C 'virtio-seri':4A,35B,78C 'virtual':28B 'vulner':144C,157C 'within':91C 'without':133C","nicknames":[],"mitigations":[],"who_affected":"Affects Intel TDX deployments that run the MigTD migration trust domain with its virtio-serial driver. The sources do not state which MigTD versions are affected or which fixed version to move to. Teams not running Intel TDX live migration can skip it.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["confidentialcomputing","infrastructure","inteltdx","medium","migtd","virtualization"],"campaign_type":null,"search_a":"'-2026':15A,18A '-59771':16A,19A 'allow':10A 'array':7A 'cve':14A,17A 'denial':11A 'flaw':9A 'index':8A 'intel':1A 'migtd':3A 'serial':6A 'servic':13A 'tdx':2A 'virtio':5A 'virtio-seri':4A","search_b":"'adversari':51B 'array':43B 'comput':22B 'confidenti':21B,64B 'confidential-comput':20B 'crash':53B 'denial':58B 'domain':33B 'driver':38B 'impact':56B 'index':44B 'infrastructur':23B 'integr':66B 'intel':25B 'intel-tdx':24B 'loss':67B 'migrat':31B 'migtd':27B,30B 'privileg':47B 'serial':37B 'servic':60B 'softwar':50B 'state':68B 'system':49B 'system-softwar':48B 'tdx':26B 'trust':32B 'valid':41B 'virtio':36B 'virtio-seri':35B 'virtual':28B","search_c":"'0':93C 'access':126C 'adversari':103C 'allow':96C 'array':72C 'attack':113C,128C 'avail':153C,168C 'combin':108C 'complex':112C 'confidenti':148C,163C 'denial':98C,116C 'domain':89C 'driver':81C 'enabl':115C 'high':154C 'hypervisor':94C 'impact':146C,170C 'improp':69C 'index':73C 'integr':150C,165C 'intel':84C 'interact':141C 'intern':135C 'knowledg':136C 'local':125C 'low':111C 'may':95C,114C,121C,145C 'migrat':87C 'migtd':76C,90C 'none':149C,151C,164C,166C,169C 'occur':123C 'potenti':122C,143C 'present':132C 'privileg':106C 'r':85C 'requir':129C,138C 'result':120C,159C 'ring':92C 'serial':80C 'servic':100C,118C 'softwar':102C 'special':134C 'subsequ':161C 'system':101C,158C,162C 'tdx':86C 'trust':88C 'user':107C,140C 'valid':70C 'via':124C 'virtio':79C 'virtio-seri':78C 'vulner':144C,157C 'within':91C 'without':133C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T18:17:42+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X","cvss_by":"secure@intel.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-59771","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-59771","severity":null,"published_at":"2026-11-10T18:17:42+00:00","modified_at":"2026-11-10T18:17:42+00:00","first_seen_at":"2026-11-10T18:22:59+00:00","fetched_at":"2026-11-10T18:22:59+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"}