{"cve_id":"CVE-2018-4063","published":"2019-05-06T19:29:00.637000+00:00","last_modified":"2026-06-17T01:58:18.623000+00:00","vuln_status":"Analyzed","description":"An exploitable remote code execution vulnerability exists in the upload.cgi functionality of Sierra Wireless AirLink ES450 FW 4.9.3. 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.","cvss_version":"3.1","cvss_vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","base_score":8.8,"base_severity":"HIGH","attack_vector":"NETWORK","privileges_req":"LOW","user_interaction":"NONE","scope":"UNCHANGED","impact_c":"HIGH","impact_i":"HIGH","impact_a":"HIGH","cwe_ids":["CWE-434"],"in_kev":true,"kev_date_added":"2025-12-12","kev_ransomware":false,"epss_score":0.2726,"epss_percentile":0.98059,"cap_rule_version":"0.1.1","stage":"EXECUTION","req_access":"USER","req_vector":"NETWORK","req_user_interaction":false,"grant_access":"USER","caps":["CODE_EXEC"],"terminal":false,"cap_confidence":"high","ingested_at":"2026-09-18T08:57:48.227566+00:00","first_seen":"2019-05-06T19:29:00.637000+00:00","kev_first_seen":"2025-12-12T00:00:00+00:00","novelty_score":0.0,"novelty_reasons":[],"novelty_at":null,"vendors":["sierrawireless"],"products":["airlink_es440","airlink_es450","airlink_gx400","airlink_gx440","airlink_gx450","airlink_ls300","airlink_lx40","airlink_lx60","airlink_mp70","airlink_mp70e","airlink_rv50","airlink_rv50x","aleos"],"affected":[{"vendor":"sierrawireless","product":"aleos","ranges":["< 4.9.4","< 4.4.9","< 4.11.0"]}]}