{"id":"CVE-2026-61467","kind":"vulnerability","aliases":["CVE-2026-61467"],"related":[],"title":"Intel TDX MigTD: use-after-free in virtio driver allows privilege escalation","description":"Use after free in the MigTD virtio driver for the Intel(R) TDX Migration Trust Domain (MigTD) within Ring 0: Hypervisor may allow an escalation of privilege. System software adversary with a privileged user combined with a low complexity attack may enable data corruption. 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 (high) and availability (low) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.","summary":"A use-after-free bug in the virtio driver of Intel's TDX Migration Trust Domain (MigTD) can corrupt data and may let a privileged local user escalate privileges. The sources describe the impact as high integrity loss and low availability loss, with no confidentiality impact.","severity":"medium","cvss":6.8,"epss":null,"exploited":false,"exploited_at":null,"products":[{"name":"MigTD","fixed":[],"affected":"","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["confidential-computing","infrastructure","intel-tdx","migtd","virtualization"],"not_affected_if":["no-intel-tdx"],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T18:17:44+00:00","first_seen_at":"2026-11-10T18:23:00+00:00","triaged_at":"2026-11-10T18:24:38+00:00","updated_at":"2026-11-10T18:24:38+00:00","category":"infrastructure","confidence":0.5,"triage":{"at":"2026-11-10T18:24:38Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"local","title":"Intel TDX MigTD: use-after-free in virtio driver allows privilege escalation","impact":"high","summary":"A use-after-free bug in the virtio driver of Intel's TDX Migration Trust Domain (MigTD) can corrupt data and may let a privileged local user escalate privileges. The sources describe the impact as high integrity loss and low availability loss, with no confidentiality impact.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["intel-tdx","migtd","confidential-computing","virtualization"],"confidence":0.5,"fix_status":"unknown","needs_auth":"yes","worst_case":"privileged local user corrupts data and escalates privilege in the trust domain","analyst_note":"Find the affected MigTD and Intel TDX versions and any Intel advisory with fixed versions; the NVD entry alone gives no product ranges.","how_to_check":"unknown","plain_action":"","product_name":"MigTD","needs_analyst":true,"not_affected_if":["no-intel-tdx"],"who_is_affected":"Affects Intel TDX deployments that run the MigTD component with its virtio driver, a Trust Domain used for live migration of confidential VMs. The sources do not name affected versions or a configuration that makes it reachable. Teams not running Intel TDX migration can skip it.","user_interaction":"no","product_ecosystem":"vendor","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000732,"input_tokens":4671,"output_tokens":530,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-2026':15A,18A '-61467':16A,19A '0':96C 'access':128C 'adversari':106C 'allow':11A,99C 'attack':116C,130C 'avail':71B,155C,170C 'bug':35B 'combin':111C 'complex':115C 'comput':23B 'confidenti':22B,75B,150C,165C 'confidential-comput':21B 'corrupt':49B,120C 'cve':14A,17A 'data':50B,119C 'describ':62B 'domain':46B,92C 'driver':10A,39B,84C 'enabl':118C 'escal':13A,58B,101C 'free':7A,34B,79C 'high':66B,153C 'hypervisor':97C 'impact':64B,76B,148C,172C 'infrastructur':24B 'integr':67B,152C,167C 'intel':1A,26B,41B,87C 'intel-tdx':25B 'interact':143C 'intern':137C 'knowledg':138C 'let':53B 'local':56B,127C 'loss':68B,72B 'low':70B,114C,156C 'may':52B,98C,117C,123C,147C 'migrat':44B,90C 'migtd':3A,20A,28B,47B,82C,93C 'none':151C,166C,168C,171C 'occur':125C 'potenti':124C,145C 'present':134C 'privileg':12A,55B,59B,103C,109C 'r':88C 'requir':131C,140C 'result':122C,161C 'ring':95C 'softwar':105C 'sourc':61B 'special':136C 'subsequ':163C 'system':104C,160C,164C 'tdx':2A,27B,43B,89C 'trust':45B,91C 'use':5A,32B,77C 'use-after-fre':4A,31B 'user':57B,110C,142C 'via':126C 'virtio':9A,38B,83C 'virtual':29B 'vulner':146C,159C 'within':94C 'without':135C","nicknames":[],"mitigations":[],"who_affected":"Affects Intel TDX deployments that run the MigTD component with its virtio driver, a Trust Domain used for live migration of confidential VMs. The sources do not name affected versions or a configuration that makes it reachable. Teams not running Intel TDX migration can skip it.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":["migtd"],"ptokens":["migtd"],"labels":["confidentialcomputing","infrastructure","inteltdx","medium","migtd","vendor","virtualization"],"campaign_type":null,"search_a":"'-2026':15A,18A '-61467':16A,19A 'allow':11A 'cve':14A,17A 'driver':10A 'escal':13A 'free':7A 'intel':1A 'migtd':3A,20A 'privileg':12A 'tdx':2A 'use':5A 'use-after-fre':4A 'virtio':9A","search_b":"'avail':71B 'bug':35B 'comput':23B 'confidenti':22B,75B 'confidential-comput':21B 'corrupt':49B 'data':50B 'describ':62B 'domain':46B 'driver':39B 'escal':58B 'free':34B 'high':66B 'impact':64B,76B 'infrastructur':24B 'integr':67B 'intel':26B,41B 'intel-tdx':25B 'let':53B 'local':56B 'loss':68B,72B 'low':70B 'may':52B 'migrat':44B 'migtd':28B,47B 'privileg':55B,59B 'sourc':61B 'tdx':27B,43B 'trust':45B 'use':32B 'use-after-fre':31B 'user':57B 'virtio':38B 'virtual':29B","search_c":"'0':96C 'access':128C 'adversari':106C 'allow':99C 'attack':116C,130C 'avail':155C,170C 'combin':111C 'complex':115C 'confidenti':150C,165C 'corrupt':120C 'data':119C 'domain':92C 'driver':84C 'enabl':118C 'escal':101C 'free':79C 'high':153C 'hypervisor':97C 'impact':148C,172C 'integr':152C,167C 'intel':87C 'interact':143C 'intern':137C 'knowledg':138C 'local':127C 'low':114C,156C 'may':98C,117C,123C,147C 'migrat':90C 'migtd':82C,93C 'none':151C,166C,168C,171C 'occur':125C 'potenti':124C,145C 'present':134C 'privileg':103C,109C 'r':88C 'requir':131C,140C 'result':122C,161C 'ring':95C 'softwar':105C 'special':136C 'subsequ':163C 'system':104C,160C,164C 'tdx':89C 'trust':91C 'use':77C 'user':110C,142C 'via':126C 'virtio':83C 'vulner':146C,159C 'within':94C 'without':135C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T18:17:44+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:N/VI:H/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-2026-61467","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-61467","severity":null,"published_at":"2026-11-10T18:17:44+00:00","modified_at":"2026-11-10T18:17:44+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"}