{"id":"CVE-2018-4063","kind":"vulnerability","aliases":["CVE-2018-4063"],"related":[],"title":"sierrawireless aleos: An exploitable remote code execution vulnerability exists in the upload.cgi functionality of Sierra Wireless AirLink…","description":"Sierra Wireless AirLink ALEOS contains an unrestricted upload of file with dangerous type vulnerability. A specially crafted HTTP request can upload a file, resulting in executable code being uploaded, and routable, to the webserver. An attacker can make an authenticated HTTP request to trigger this vulnerability. The impacted product could be end-of-life (EoL) and/or end-of-service (EoS). Users should discontinue product utilization.\n\nCISA required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","summary":"Sierra Wireless AirLink ALEOS cellular routers accept a crafted HTTP upload that stores executable code on the device's web server. An attacker who can log in can then run that code on the router.","severity":"critical","cvss":9.0,"epss":null,"exploited":true,"exploited_at":"2025-12-12T00:00:00+00:00","products":[{"name":"Sierra Wireless AirLink ALEOS","fixed":[],"affected":"","ecosystem":"vendor"},{"name":"sierrawireless aleos","fixed":["4.4.9"],"affected":"< 4.4.9","ecosystem":"vendor"},{"name":"sierrawireless aleos","fixed":["4.11.0"],"affected":"< 4.11.0","ecosystem":"vendor"},{"name":"sierrawireless aleos","fixed":["4.9.4"],"affected":"< 4.9.4","ecosystem":"vendor"}],"ecosystems":["vendor"],"tags":["airlink","aleos","cellular-router","exploited","infrastructure","iot","sierra-wireless"],"not_affected_if":["no-aleos-devices"],"how_to_check":"Identify any Sierra Wireless AirLink ALEOS devices on the network and note their firmware version.","fix":"Apply the vendor mitigations or discontinue the device, since the product may be end-of-life and no fixed version is named in the sources.","status":"open","published_at":"2019-05-06T19:29:00+00:00","first_seen_at":"2026-10-23T19:11:51+00:00","triaged_at":"2026-10-23T20:42:45+00:00","updated_at":"2026-10-23T23:44:51+00:00","category":"infrastructure","confidence":0.7,"triage":{"at":"2026-10-23T20:42:45Z","model":"claude-haiku-5-5","output":{"fix":"Apply the vendor mitigations or discontinue the device, since the product may be end-of-life and no fixed version is named in the sources.\nunknown","reach":"network","summary":"Sierra Wireless AirLink ALEOS cellular routers accept a crafted HTTP upload that stores executable code on the device's web server. An attacker who can log in can then run that code on the router.","category":"infrastructure","who_cares":["sierra-wireless","airlink","aleos","cellular-router","iot"],"confidence":0.7,"needs_auth":"yes","worst_case":"Attacker runs uploaded executable code on the router's web server.","analyst_note":"Find the affected and fixed ALEOS versions and the vendor advisory from Sierra Wireless; the KEV entry does not name them.","how_to_check":"Identify any Sierra Wireless AirLink ALEOS devices on the network and note their firmware version.\nunknown","needs_analyst":true,"not_affected_if":["no-aleos-devices"],"user_interaction":"no","needs_special_setup":"unknown","severity_if_unknown":"high"},"cost_usd":0.000458,"input_tokens":2665,"output_tokens":382,"severity_before":"unknown"},"analyst_status":null,"analyst_note":null,"search":"'-01':159C '-2018':19A,22A '-4063':20A,23A '22':158C 'accept':51B 'action':149C 'airlink':17A,26A,34B,47B,82C 'aleo':2A,35B,48B,83C 'aleos':27A,29A,31A,33A 'and/or':136C 'appli':150C 'applic':156C 'attack':67B,115C 'authent':119C 'bod':157C 'cellular':37B,49B 'cellular-rout':36B 'cisa':147C 'cloud':162C 'code':6A,59B,76B,106C 'contain':84C 'could':129C 'craft':53B,96C 'cve':18A,21A 'danger':91C 'devic':62B 'discontinu':144C,165C 'end':132C,138C 'end-of-lif':131C 'end-of-servic':137C 'eo':141C 'eol':135C 'execut':7A,58B,105C 'exist':9A 'exploit':4A,39B 'file':89C,102C 'follow':155C 'function':13A 'guidanc':160C 'http':54B,97C,120C 'impact':127C 'infrastructur':40B 'instruct':154C 'iot':41B 'life':134C 'log':70B 'make':117C 'mitig':151C,171C 'per':152C 'product':128C,145C,169C 'remot':5A 'request':98C,121C 'requir':148C 'result':103C 'routabl':110C 'router':38B,50B,79B 'run':74B 'server':65B 'servic':140C,163C 'sierra':15A,24A,43B,45B,80C 'sierra-wireless':42B 'sierrawireless':1A,28A,30A,32A 'special':95C 'store':57B 'trigger':123C 'type':92C 'unavail':173C 'unrestrict':86C 'upload':55B,87C,100C,108C 'upload.cgi':12A 'use':166C 'user':142C 'util':146C 'vendor':153C 'vulner':8A,93C,125C 'web':64B 'webserv':113C 'wireless':16A,25A,44B,46B,81C","nicknames":[],"mitigations":[],"who_affected":null,"tier":null,"verified":{},"analyst_revisit_at":null,"first_public_at":"2019-05-06T19:29:00+00:00","kev":{"dateAdded":"2025-12-12","dueDate":"2026-01-02","requiredAction":"Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.","knownRansomwareCampaignUse":"Unknown"},"cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cvss_by":"nvd@nist.gov","poc_count":0,"sources":[{"source":"kev","external_id":"CVE-2018-4063","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?search_api_fulltext=CVE-2018-4063","severity":null,"published_at":"2025-12-12T00:00:00+00:00","modified_at":null,"first_seen_at":"2026-10-23T19:11:51+00:00","fetched_at":"2026-10-25T16:39:45+00:00","note":null},{"source":"nvd","external_id":"CVE-2018-4063","url":"https://nvd.nist.gov/vuln/detail/CVE-2018-4063","severity":null,"published_at":"2019-05-06T19:29:00+00:00","modified_at":"2026-06-17T01:58:18+00:00","first_seen_at":"2026-10-23T23:44:51+00:00","fetched_at":"2026-10-23T23:44:51+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"}