{"id":"CVE-2026-61383","kind":"vulnerability","aliases":["CVE-2026-61383"],"related":[],"title":"Intel TDX MigTD: buffer size error lets a hypervisor cause denial of service","description":"Incorrect calculation of buffer size in the MigTD's servtd_get_quote for the Intel(R) TDX Migration Trust Domain (MigTD) within Ring 0: Hypervisor may allow a denial of service. System software adversary with an unauthenticated user combined with a high 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 (low) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.","summary":"The Intel TDX Migration Trust Domain (MigTD) miscalculates a buffer size in its servtd_get_quote routine. A system software adversary with local access can cause a denial of service in the trust domain.","severity":"low","cvss":2.0,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["confidential-computing","infrastructure","intel-tdx","migtd"],"not_affected_if":["no-tdx-deployment"],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T18:17:43+00:00","first_seen_at":"2026-11-10T18:23:00+00:00","triaged_at":"2026-11-10T18:26:34+00:00","updated_at":"2026-11-10T18:26:34+00:00","category":"infrastructure","confidence":0.6,"triage":{"at":"2026-11-10T18:26:34Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"local","title":"Intel TDX MigTD: buffer size error lets a hypervisor cause denial of service","impact":"low","summary":"The Intel TDX Migration Trust Domain (MigTD) miscalculates a buffer size in its servtd_get_quote routine. A system software adversary with local access can cause a denial of service in the trust domain.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["intel-tdx","confidential-computing","migtd"],"confidence":0.6,"fix_status":"unknown","needs_auth":"no","worst_case":"Denial of service against the migration trust domain via local access","analyst_note":"Check Intel's security advisory for affected MigTD versions and the fixed release; the NVD entry alone does not state them.","how_to_check":"unknown","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":["no-tdx-deployment"],"who_is_affected":"Affects Intel TDX deployments that use the MigTD live migration component in confidential computing environments. The sources do not say which versions or configurations are affected, and do not describe how to check for them.","user_interaction":"no","product_ecosystem":"","needs_special_setup":"yes","severity_if_unknown":"low"},"cost_usd":0.000684,"input_tokens":4683,"output_tokens":431,"severity_before":"low"},"analyst_status":null,"analyst_note":null,"search":"'-2026':15A,18A '-61383':16A,19A '0':85C 'access':51B,118C 'adversari':48B,95C 'allow':88C 'attack':105C,120C 'avail':145C,160C 'buffer':4A,37B,65C 'calcul':63C 'caus':10A,53B 'combin':100C 'complex':104C 'comput':22B 'confidenti':21B,140C,155C 'confidential-comput':20B 'cve':14A,17A 'denial':11A,55B,90C,108C 'domain':33B,61B,81C 'enabl':107C 'error':6A 'get':42B,72C 'high':103C 'hypervisor':9A,86C 'impact':138C,162C 'incorrect':62C 'infrastructur':23B 'integr':142C,157C 'intel':1A,25B,29B,76C 'intel-tdx':24B 'interact':133C 'intern':127C 'knowledg':128C 'let':7A 'local':50B,117C 'low':146C 'may':87C,106C,113C,137C 'migrat':31B,79C 'migtd':3A,27B,34B,69C,82C 'miscalcul':35B 'none':141C,143C,156C,158C,161C 'occur':115C 'potenti':114C,135C 'present':124C 'quot':43B,73C 'r':77C 'requir':121C,130C 'result':112C,151C 'ring':84C 'routin':44B 'servic':13A,57B,92C,110C 'servtd':41B,71C 'size':5A,38B,66C 'softwar':47B,94C 'special':126C 'subsequ':153C 'system':46B,93C,150C,154C 'tdx':2A,26B,30B,78C 'trust':32B,60B,80C 'unauthent':98C 'user':99C,132C 'via':116C 'vulner':136C,149C 'within':83C 'without':125C","nicknames":[],"mitigations":[],"who_affected":"Affects Intel TDX deployments that use the MigTD live migration component in confidential computing environments. The sources do not say which versions or configurations are affected, and do not describe how to check for them.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["confidentialcomputing","infrastructure","inteltdx","low","migtd"],"campaign_type":null,"search_a":"'-2026':15A,18A '-61383':16A,19A 'buffer':4A 'caus':10A 'cve':14A,17A 'denial':11A 'error':6A 'hypervisor':9A 'intel':1A 'let':7A 'migtd':3A 'servic':13A 'size':5A 'tdx':2A","search_b":"'access':51B 'adversari':48B 'buffer':37B 'caus':53B 'comput':22B 'confidenti':21B 'confidential-comput':20B 'denial':55B 'domain':33B,61B 'get':42B 'infrastructur':23B 'intel':25B,29B 'intel-tdx':24B 'local':50B 'migrat':31B 'migtd':27B,34B 'miscalcul':35B 'quot':43B 'routin':44B 'servic':57B 'servtd':41B 'size':38B 'softwar':47B 'system':46B 'tdx':26B,30B 'trust':32B,60B","search_c":"'0':85C 'access':118C 'adversari':95C 'allow':88C 'attack':105C,120C 'avail':145C,160C 'buffer':65C 'calcul':63C 'combin':100C 'complex':104C 'confidenti':140C,155C 'denial':90C,108C 'domain':81C 'enabl':107C 'get':72C 'high':103C 'hypervisor':86C 'impact':138C,162C 'incorrect':62C 'integr':142C,157C 'intel':76C 'interact':133C 'intern':127C 'knowledg':128C 'local':117C 'low':146C 'may':87C,106C,113C,137C 'migrat':79C 'migtd':69C,82C 'none':141C,143C,156C,158C,161C 'occur':115C 'potenti':114C,135C 'present':124C 'quot':73C 'r':77C 'requir':121C,130C 'result':112C,151C 'ring':84C 'servic':92C,110C 'servtd':71C 'size':66C 'softwar':94C 'special':126C 'subsequ':153C 'system':93C,150C,154C 'tdx':78C 'trust':80C 'unauthent':98C 'user':99C,132C 'via':116C 'vulner':136C,149C 'within':83C 'without':125C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T18:17:43+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:L/AC:H/AT:P/PR:L/UI:N/VC:N/VI:N/VA:L/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-2026-61383","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-61383","severity":null,"published_at":"2026-11-10T18:17:43+00:00","modified_at":"2026-11-10T18:17:43+00:00","first_seen_at":"2026-11-10T18:23:00+00:00","fetched_at":"2026-11-10T18:23:00+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"}