{"id":"CVE-2024-49039","kind":"vulnerability","aliases":["CVE-2024-49039"],"related":[],"title":"Windows Task Scheduler Elevation of Privilege Vulnerability","description":"Microsoft Windows Task Scheduler contains a privilege escalation vulnerability that can allow an attacker-provided, local application to escalate privileges outside of its AppContainer, and access privileged RPC functions.\n\nCISA required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.","summary":"Microsoft Windows Task Scheduler has a privilege escalation flaw that lets a local application break out of its AppContainer sandbox and call privileged RPC functions. CISA reports it is being exploited in the wild, with ransomware use tagged.","severity":"high","cvss":8.8,"epss":null,"exploited":true,"exploited_at":"2024-11-12T00:00:00+00:00","products":[{"name":"Microsoft Windows","fixed":[],"affected":"","ecosystem":"vendor"},{"name":"microsoft windows 10 1507","fixed":["10.0.10240.20826"],"affected":"< 10.0.10240.20826","ecosystem":"vendor"},{"name":"microsoft windows 10 1607","fixed":["10.0.14393.7515"],"affected":"< 10.0.14393.7515","ecosystem":"vendor"},{"name":"microsoft windows 10 1809","fixed":["10.0.17763.6532"],"affected":"< 10.0.17763.6532","ecosystem":"vendor"},{"name":"microsoft windows 10 21h2","fixed":["10.0.19044.5131"],"affected":"< 10.0.19044.5131","ecosystem":"vendor"},{"name":"microsoft windows 10 22h2","fixed":["10.0.19045.5131"],"affected":"< 10.0.19045.5131","ecosystem":"vendor"},{"name":"microsoft windows 11 22h2","fixed":["10.0.22621.4460"],"affected":"< 10.0.22621.4460","ecosystem":"vendor"},{"name":"microsoft windows 11 23h2","fixed":["10.0.22631.4460"],"affected":"< 10.0.22631.4460","ecosystem":"vendor"},{"name":"microsoft windows 11 24h2","fixed":["10.0.26100.2314"],"affected":"< 10.0.26100.2314","ecosystem":"vendor"},{"name":"microsoft windows server 2016","fixed":["10.0.14393.7515"],"affected":"< 10.0.14393.7515","ecosystem":"vendor"},{"name":"microsoft windows server 2019","fixed":["10.0.17763.6532"],"affected":"< 10.0.17763.6532","ecosystem":"vendor"},{"name":"microsoft windows server 2022","fixed":["10.0.20348.2849"],"affected":"< 10.0.20348.2849","ecosystem":"vendor"},{"name":"microsoft windows server 2022 23h2","fixed":["10.0.25398.1251"],"affected":"< 10.0.25398.1251","ecosystem":"vendor"},{"name":"microsoft windows server 2025","fixed":["10.0.26100.2314"],"affected":"< 10.0.26100.2314","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["endpoints","exploited","infrastructure","ransomware","windows","windows-servers"],"not_affected_if":[],"how_to_check":null,"fix":"Apply the Microsoft patch for CVE-2024-49039 per vendor instructions; if none is available, discontinue use of the affected product per CISA.","status":"open","published_at":"2024-11-12T00:00:00+00:00","first_seen_at":"2026-10-23T19:11:51+00:00","triaged_at":"2026-10-23T20:56:15+00:00","updated_at":"2026-10-23T22:29:05+00:00","category":"infrastructure","confidence":0.6,"triage":{"at":"2026-10-23T20:56:15Z","model":"claude-haiku-5-5","output":{"fix":"Apply the Microsoft patch for CVE-2024-49039 per vendor instructions; if none is available, discontinue use of the affected product per CISA.\nUnknown which exact Windows builds are patched from these sources.","reach":"local","impact":"high","summary":"Microsoft Windows Task Scheduler has a privilege escalation flaw that lets a local application break out of its AppContainer sandbox and call privileged RPC functions. CISA reports it is being exploited in the wild, with ransomware use tagged.","category":"infrastructure","who_cares":["windows","windows-servers","endpoints"],"confidence":0.6,"needs_auth":"yes","worst_case":"Sandboxed local app gains privileged RPC access and escalates to higher system privileges.","analyst_note":"Confirm affected Windows builds and the patch KB from the Microsoft Security Update Guide entry for CVE-2024-49039; sources did not list versions.","how_to_check":"unknown","needs_analyst":true,"not_affected_if":[],"user_interaction":"no","needs_special_setup":"no","severity_if_unknown":"high"},"cost_usd":0.000479,"input_tokens":2842,"output_tokens":389,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-2024':9A,12A '-49039':10A,13A '10':18A,22A,26A,30A,34A '11':38A,42A,46A '1507':19A '1607':23A '1809':27A '2016':51A '2019':55A '2022':59A,63A '2025':68A '21h2':31A '22h2':35A,39A '23h2':43A,64A '24h2':47A 'access':141C 'action':147C 'allow':126C 'appcontain':95B,139C 'appli':148C 'applic':90B,132C 'attack':129C 'attacker-provid':128C 'break':91B 'call':98B 'cisa':102B,145C 'contain':119C 'cve':8A,11A 'discontinu':154C 'elev':4A 'endpoint':69B 'escal':84B,122C,134C 'exploit':70B,107B 'flaw':85B 'function':101B,144C 'infrastructur':71B 'instruct':152C 'let':87B 'local':89B,131C 'microsoft':14A,16A,20A,24A,28A,32A,36A,40A,44A,48A,52A,56A,60A,65A,77B,115C 'mitig':149C,160C 'outsid':136C 'per':150C 'privileg':6A,83B,99B,121C,135C,142C 'product':158C 'provid':130C 'ransomwar':72B,112B 'report':103B 'requir':146C 'rpc':100B,143C 'sandbox':96B 'schedul':3A,80B,118C 'server':50A,54A,58A,62A,67A,76B 'tag':114B 'task':2A,79B,117C 'unavail':162C 'use':113B,155C 'vendor':151C 'vulner':7A,123C 'wild':110B 'window':1A,73B,75B,78B,116C 'windows':15A,17A,21A,25A,29A,33A,37A,41A,45A,49A,53A,57A,61A,66A 'windows-serv':74B","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2024-11-12T00:00:00+00:00","kev":{"dateAdded":"2024-11-12","dueDate":"2024-12-03","requiredAction":"Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.","knownRansomwareCampaignUse":"Known"},"cvss_vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H","cvss_by":"secure@microsoft.com","poc_count":0,"sources":[{"source":"kev","external_id":"CVE-2024-49039","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2024-49039","severity":null,"published_at":"2024-11-12T00:00:00+00:00","modified_at":null,"first_seen_at":"2026-10-23T19:11:51+00:00","fetched_at":"2026-10-25T19:35:21+00:00","note":null},{"source":"nvd","external_id":"CVE-2024-49039","url":"https://nvd.nist.gov/vuln/detail/CVE-2024-49039","severity":null,"published_at":"2024-11-12T18:15:44+00:00","modified_at":"2026-08-04T05:16:30+00:00","first_seen_at":"2026-10-23T22:29:05+00:00","fetched_at":"2026-10-23T22:29:05+00:00","note":null}],"documents":[],"notice":"Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai"}