{"cve":"CVE-2026-34909","nvd":{"published":"2026-05-22T02:16:34.390","modified":"2026-07-23T16:10:00.137","status":"Analyzed","description":"A malicious actor with access to the network could exploit a Path Traversal vulnerability found in UniFi OS devices to access files on the underlying system that could be manipulated to access an underlying account.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H","score":10.0},"cwes":["CWE-22"],"references":["https://community.ui.com/releases/Security-Advisory-Bulletin-064-064/84811c09-4cf4-42ab-bd61-cc994445963b","https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2026-34909","https://www.pwndefend.com/2026/06/09/cve-2026-34910-exploitation-itw-building-a-botnet-mirai/"],"products":["ui:enterprise_fortress_gateway_firmware","ui:enterprise_network_video_recorder_core_firmware","ui:enterprise_network_video_recorder_firmware","ui:unas_2_firmware","ui:unas_4_firmware","ui:unas_pro_4_firmware","ui:unas_pro_8_firmware","ui:unas_pro_firmware","ui:unifi_cloud_gateway_fiber_firmware","ui:unifi_cloud_gateway_industrial_firmware","ui:unifi_cloud_gateway_max_firmware","ui:unifi_cloud_gateway_ultra_firmware","ui:unifi_cloud_key_plus_firmware","ui:unifi_cloudkey_enterprise_firmware","ui:unifi_cloudkey_firmware","ui:unifi_dream_machine_beast_firmware","ui:unifi_dream_machine_firmware","ui:unifi_dream_machine_pro_firmware","ui:unifi_dream_machine_pro_max_firmware","ui:unifi_dream_machine_special_edition_firmware","ui:unifi_dream_router_5g_max_firmware","ui:unifi_dream_router_7_firmware","ui:unifi_dream_router_firmware","ui:unifi_dream_wall_firmware","ui:unifi_express_7_firmware","ui:unifi_express_firmware","ui:unifi_network_video_recorder_firmware","ui:unifi_network_video_recorder_g2_firmware","ui:unifi_network_video_recorder_g2_pro_firmware","ui:unifi_network_video_recorder_instant_firmware","ui:unifi_network_video_recorder_pro_firmware","ui:unifi_os_server"],"source":"nvd","synced_at":"2026-10-19T22:36:28.938604137+00:00"},"epss":{"cve":"CVE-2026-34909","score":0.68033,"percentile":0.99324,"date":"2026-10-31"},"kev":{"cve":"CVE-2026-34909","date_added":"2026-06-23","due_date":"2026-06-26","vendor":"Ubiquiti","product":"UniFi OS","known_ransomware":false},"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}