{"id":"CVE-2026-39456","kind":"vulnerability","aliases":["CVE-2026-39456"],"related":[],"title":"Media Transcode Accelerator: bad input validation lets local users crash the system","description":"Improper input validation for some Media Transcode Accelerator before version 1.0.0-00128 within Ring 3: User Applications may allow a denial of service. System software adversary with a privileged 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 (high) of the vulnerable system, resulting in subsequent system confidentiality (none), integrity (none) and availability (none) impacts.","summary":"Media Transcode Accelerator versions before 1.0.0-00128 do not validate input properly from Ring 3 user applications. A privileged local user can trigger a denial of service that takes the affected system down.","severity":"medium","cvss":5.6,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["infrastructure","media-transcode-accelerator"],"not_affected_if":["already-on-1.0.0-00128-or-later"],"how_to_check":"- Check the installed Media Transcode Accelerator version against the fixed version `1.0.0-00128`","fix":"- Move Media Transcode Accelerator to `1.0.0-00128` or later","status":"open","published_at":"2026-11-10T17:17:42+00:00","first_seen_at":"2026-11-10T17:22:42+00:00","triaged_at":"2026-11-10T17:24:25+00:00","updated_at":"2026-11-10T17:24:25+00:00","category":"infrastructure","confidence":0.6,"triage":{"at":"2026-11-10T17:24:25Z","model":"claude-haiku-5-5","output":{"fix":"- Move Media Transcode Accelerator to `1.0.0-00128` or later","reach":"local","title":"Media Transcode Accelerator: bad input validation lets local users crash the system","impact":"low","summary":"Media Transcode Accelerator versions before 1.0.0-00128 do not validate input properly from Ring 3 user applications. A privileged local user can trigger a denial of service that takes the affected system down.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["media-transcode-accelerator"],"confidence":0.6,"fix_status":"available","needs_auth":"yes","worst_case":"Availability loss: the system can be made to deny service","analyst_note":"","how_to_check":"- Check the installed Media Transcode Accelerator version against the fixed version `1.0.0-00128`\n- unknown for other commands or settings, as the sources do not say","plain_action":"","product_name":"","needs_analyst":false,"not_affected_if":["already-on-1.0.0-00128-or-later"],"who_is_affected":"Systems running Media Transcode Accelerator before `1.0.0-00128`. The attack needs local access and a privileged user with high complexity conditions, so remote exposure is not described. unknown for which products or deployments ship this component.","user_interaction":"no","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"unknown"},"cost_usd":0.000703,"input_tokens":4647,"output_tokens":476,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-00128':30B,67C '-2026':14A,17A '-39456':15A,18A '1.0.0':29B,66C '3':38B,70C 'acceler':3A,23B,26B,63C 'access':104C 'adversari':81C 'affect':54B 'allow':74C 'applic':40B,72C 'attack':91C,106C 'avail':131C,146C 'bad':4A 'combin':86C 'complex':90C 'confidenti':126C,141C 'crash':10A 'cve':13A,16A 'denial':48B,76C,94C 'enabl':93C 'high':89C,132C 'impact':124C,148C 'improp':56C 'infrastructur':19B 'input':5A,34B,57C 'integr':128C,143C 'interact':119C 'intern':113C 'knowledg':114C 'let':7A 'local':8A,43B,103C 'may':73C,92C,99C,123C 'media':1A,21B,24B,61C 'media-transcode-acceler':20B 'none':127C,129C,142C,144C,147C 'occur':101C 'potenti':100C,121C 'present':110C 'privileg':42B,84C 'proper':35B 'requir':107C,116C 'result':98C,137C 'ring':37B,69C 'servic':50B,78C,96C 'softwar':80C 'special':112C 'subsequ':139C 'system':12A,55B,79C,136C,140C 'take':52B 'transcod':2A,22B,25B,62C 'trigger':46B 'user':9A,39B,44B,71C,85C,118C 'valid':6A,33B,58C 'version':27B,65C 'via':102C 'vulner':122C,135C 'within':68C 'without':111C","nicknames":[],"mitigations":[],"who_affected":"Systems running Media Transcode Accelerator before `1.0.0-00128`. The attack needs local access and a privileged user with high complexity conditions, so remote exposure is not described. unknown for which products or deployments ship this component.","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"available","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["infrastructure","mediatranscodeaccelerator","medium"],"campaign_type":null,"search_a":"'-2026':14A,17A '-39456':15A,18A 'acceler':3A 'bad':4A 'crash':10A 'cve':13A,16A 'input':5A 'let':7A 'local':8A 'media':1A 'system':12A 'transcod':2A 'user':9A 'valid':6A","search_b":"'-00128':30B '1.0.0':29B '3':38B 'acceler':23B,26B 'affect':54B 'applic':40B 'denial':48B 'infrastructur':19B 'input':34B 'local':43B 'media':21B,24B 'media-transcode-acceler':20B 'privileg':42B 'proper':35B 'ring':37B 'servic':50B 'system':55B 'take':52B 'transcod':22B,25B 'trigger':46B 'user':39B,44B 'valid':33B 'version':27B","search_c":"'-00128':67C '1.0.0':66C '3':70C 'acceler':63C 'access':104C 'adversari':81C 'allow':74C 'applic':72C 'attack':91C,106C 'avail':131C,146C 'combin':86C 'complex':90C 'confidenti':126C,141C 'denial':76C,94C 'enabl':93C 'high':89C,132C 'impact':124C,148C 'improp':56C 'input':57C 'integr':128C,143C 'interact':119C 'intern':113C 'knowledg':114C 'local':103C 'may':73C,92C,99C,123C 'media':61C 'none':127C,129C,142C,144C,147C 'occur':101C 'potenti':100C,121C 'present':110C 'privileg':84C 'requir':107C,116C 'result':98C,137C 'ring':69C 'servic':78C,96C 'softwar':80C 'special':112C 'subsequ':139C 'system':79C,136C,140C 'transcod':62C 'user':71C,85C,118C 'valid':58C 'version':65C 'via':102C 'vulner':122C,135C 'within':68C 'without':111C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T17:17:42+00:00","kev":null,"cvss_vector":"CVSS:4.0/AV:L/AC:H/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-2026-39456","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-39456","severity":null,"published_at":"2026-11-10T17:17:42+00:00","modified_at":"2026-11-10T17:17:42+00:00","first_seen_at":"2026-11-10T17:22:42+00:00","fetched_at":"2026-11-10T17:22:42+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"}