{"id":"CVE-2026-105541","kind":"vulnerability","aliases":["CVE-2026-105541"],"related":[],"title":"Windows Audio Service: out-of-range pointer lets a local user gain privileges","description":"Use of out-of-range pointer offset in Windows Audio Service allows an authorized attacker to elevate privileges locally.","summary":"Windows Audio Service mishandles a pointer offset, so an attacker who already has a local account can raise their privileges. The NVD entry gives a CVSS score of 7.8 (high) and reports no exploitation in the wild.","severity":"high","cvss":7.8,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["infrastructure","local-privilege-escalation","windows","windows-audio"],"not_affected_if":["no-untrusted-local-users"],"how_to_check":"- Check the installed Windows build with `winver` and compare it with the fixed build in Microsoft's advisory, which the sources do not name.\n- Confirm the Windows Audio service is running with `sc query Audiosrv`.","fix":null,"status":"open","published_at":"2026-11-10T19:17:55+00:00","first_seen_at":"2026-11-10T19:24:18+00:00","triaged_at":"2026-11-10T19:42:36+00:00","updated_at":"2026-11-10T19:42:36+00:00","category":"infrastructure","confidence":0.45,"triage":{"at":"2026-11-10T19:42:36Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"local","title":"Windows Audio Service: out-of-range pointer lets a local user gain privileges","impact":"high","summary":"Windows Audio Service mishandles a pointer offset, so an attacker who already has a local account can raise their privileges. The NVD entry gives a CVSS score of 7.8 (high) and reports no exploitation in the wild.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["windows","windows-audio","local-privilege-escalation"],"confidence":0.45,"fix_status":"unknown","needs_auth":"yes","worst_case":"local user gains higher privileges, possibly full system control","analyst_note":"Find the Microsoft Security Response Center advisory for CVE-2026-105541 to get affected builds, fixed builds and the patch KB.","how_to_check":"- Check the installed Windows build with `winver` and compare it with the fixed build in Microsoft's advisory, which the sources do not name.\n- Confirm the Windows Audio service is running with `sc query Audiosrv`.","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":["no-untrusted-local-users"],"who_is_affected":"Any Windows machine where a user can log on locally can be affected, since the attacker must already be authorized on the system. The sources do not say which Windows builds are vulnerable or which fixed build applies. Systems with no untrusted local users carry lower risk, but the sources do not say so explicitly.","user_interaction":"unknown","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000725,"input_tokens":4496,"output_tokens":551,"severity_before":"high"},"analyst_status":"queued","analyst_note":"Find the Microsoft Security Response Center advisory for CVE-2026-105541 to get affected builds, fixed builds and the patch KB.","search":"'-105541':17A,20A '-2026':16A,19A '7.8':58B 'account':45B 'allow':79C 'alreadi':41B 'attack':39B,82C 'audio':2A,29B,31B,77C 'author':81C 'cve':15A,18A 'cvss':55B 'elev':84C 'entri':52B 'escal':25B 'exploit':63B 'gain':13A 'give':53B 'high':59B 'infrastructur':21B 'let':9A 'local':11A,23B,44B,86C 'local-privilege-escal':22B 'mishandl':33B 'nvd':51B 'offset':36B,74C 'out-of-rang':4A,69C 'pointer':8A,35B,73C 'privileg':14A,24B,49B,85C 'rais':47B 'rang':7A,72C 'report':61B 'score':56B 'servic':3A,32B,78C 'use':67C 'user':12A 'wild':66B 'window':1A,26B,28B,30B,76C 'windows-audio':27B","nicknames":[],"mitigations":[],"who_affected":"Any Windows machine where a user can log on locally can be affected, since the attacker must already be authorized on the system. The sources do not say which Windows builds are vulnerable or which fixed build applies. Systems with no untrusted local users carry lower risk, but the sources do not say so explicitly.","tier":"B","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["high","infrastructure","localprivilegeescalation","windows","windowsaudio"],"campaign_type":null,"search_a":"'-105541':17A,20A '-2026':16A,19A 'audio':2A 'cve':15A,18A 'gain':13A 'let':9A 'local':11A 'out-of-rang':4A 'pointer':8A 'privileg':14A 'rang':7A 'servic':3A 'user':12A 'window':1A","search_b":"'7.8':58B 'account':45B 'alreadi':41B 'attack':39B 'audio':29B,31B 'cvss':55B 'entri':52B 'escal':25B 'exploit':63B 'give':53B 'high':59B 'infrastructur':21B 'local':23B,44B 'local-privilege-escal':22B 'mishandl':33B 'nvd':51B 'offset':36B 'pointer':35B 'privileg':24B,49B 'rais':47B 'report':61B 'score':56B 'servic':32B 'wild':66B 'window':26B,28B,30B 'windows-audio':27B","search_c":"'allow':79C 'attack':82C 'audio':77C 'author':81C 'elev':84C 'local':86C 'offset':74C 'out-of-rang':69C 'pointer':73C 'privileg':85C 'rang':72C 'servic':78C 'use':67C 'window':76C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:17:55+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cvss_by":"secure@microsoft.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-105541","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-105541","severity":null,"published_at":"2026-11-10T19:17:55+00:00","modified_at":"2026-11-10T19:17:55+00:00","first_seen_at":"2026-11-10T19:24:18+00:00","fetched_at":"2026-11-10T19:24:18+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"}