{"id":"CVE-2026-95944","kind":"vulnerability","aliases":["CVE-2026-95944"],"related":[],"title":"Windows App Readiness Service: weak authentication lets a local user tamper","description":"Weak authentication in Windows App Readiness Service allows an authorized attacker to perform tampering locally.","summary":"Windows App Readiness Service has weak authentication, so a user already authorized on the machine can tamper with it locally. The sources do not describe what exactly can be changed or what an attacker gains beyond that.","severity":"medium","cvss":5.5,"epss":null,"exploited":false,"exploited_at":null,"products":[],"ecosystems":[],"tags":["infrastructure","windows"],"not_affected_if":[],"how_to_check":null,"fix":null,"status":"open","published_at":"2026-11-10T19:21:46+00:00","first_seen_at":"2026-11-10T19:25:24+00:00","triaged_at":"2026-11-10T20:00:27+00:00","updated_at":"2026-11-10T20:00:27+00:00","category":"infrastructure","confidence":0.5,"triage":{"at":"2026-11-10T20:00:27Z","model":"claude-haiku-5-5","output":{"fix":"unknown","reach":"local","title":"Windows App Readiness Service: weak authentication lets a local user tamper","impact":"medium","summary":"Windows App Readiness Service has weak authentication, so a user already authorized on the machine can tamper with it locally. The sources do not describe what exactly can be changed or what an attacker gains beyond that.","audience":"businesses","category":"infrastructure","nicknames":[],"who_cares":["windows"],"confidence":0.5,"fix_status":"unknown","needs_auth":"yes","worst_case":"Local authorized user tampers with Windows App Readiness Service","analyst_note":"Check the Microsoft Security Update Guide entry for CVE-2026-95944 for affected Windows builds, the fixed update, and any detection steps.","how_to_check":"- unknown","plain_action":"","product_name":"","needs_analyst":true,"not_affected_if":[],"who_is_affected":"Affected systems are Windows machines running the App Readiness Service. An attacker must already be authorized on the machine, and the sources do not describe any further conditions. unknown","user_interaction":"unknown","product_ecosystem":"","needs_special_setup":"unknown","severity_if_unknown":"medium"},"cost_usd":0.000654,"input_tokens":4485,"output_tokens":411,"severity_before":"medium"},"analyst_status":null,"analyst_note":null,"search":"'-2026':13A,16A '-95944':14A,17A 'allow':63C 'alreadi':30B 'app':2A,21B,60C 'attack':53B,66C 'authent':6A,26B,57C 'author':31B,65C 'beyond':55B 'chang':49B 'cve':12A,15A 'describ':44B 'exact':46B 'gain':54B 'infrastructur':18B 'let':7A 'local':9A,39B,70C 'machin':34B 'perform':68C 'readi':3A,22B,61C 'servic':4A,23B,62C 'sourc':41B 'tamper':11A,36B,69C 'user':10A,29B 'weak':5A,25B,56C 'window':1A,19B,20B,59C","nicknames":[],"mitigations":[],"who_affected":"Affected systems are Windows machines running the App Readiness Service. An attacker must already be authorized on the machine, and the sources do not describe any further conditions. unknown","tier":"C","verified":{},"analyst_revisit_at":null,"fix_status":"none","audience":"businesses","plain_action":null,"pkeys":[],"ptokens":[],"labels":["infrastructure","medium","windows"],"campaign_type":null,"search_a":"'-2026':13A,16A '-95944':14A,17A 'app':2A 'authent':6A 'cve':12A,15A 'let':7A 'local':9A 'readi':3A 'servic':4A 'tamper':11A 'user':10A 'weak':5A 'window':1A","search_b":"'alreadi':30B 'app':21B 'attack':53B 'authent':26B 'author':31B 'beyond':55B 'chang':49B 'describ':44B 'exact':46B 'gain':54B 'infrastructur':18B 'local':39B 'machin':34B 'readi':22B 'servic':23B 'sourc':41B 'tamper':36B 'user':29B 'weak':25B 'window':19B,20B","search_c":"'allow':63C 'app':60C 'attack':66C 'authent':57C 'author':65C 'local':70C 'perform':68C 'readi':61C 'servic':62C 'tamper':69C 'weak':56C 'window':59C","cause_entry":null,"cause_path":null,"disclosures_checked_at":null,"first_public_at":"2026-11-10T19:21:46+00:00","kev":null,"cvss_vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N","cvss_by":"secure@microsoft.com","poc_count":0,"sources":[{"source":"nvd","external_id":"CVE-2026-95944","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-95944","severity":null,"published_at":"2026-11-10T19:21:46+00:00","modified_at":"2026-11-10T19:21:46+00:00","first_seen_at":"2026-11-10T19:25:24+00:00","fetched_at":"2026-11-10T19:25:24+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"}