{"id":"CVE-2025-59980","title":"An Authentication Bypass by Primary Weakness\n\nin the FTP server of Juniper Networks Junos OS allows an unauthenticated, network-based attacker to get limited read-write access to files on the device.\nWhen the FTP server is enabled and a …","summary":"An Authentication Bypass by Primary Weakness\n\nin the FTP server of Juniper Networks Junos OS allows an unauthenticated, network-based attacker to get limited read-write access to files on the device.\nWhen the FTP server is enabled and a …","severity":"medium","cvss":6.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","cwe":["CWE-305"],"vendor":"juniper","product":"junos","affected":["junos < 22.4","junos = 22.4","junos = 23.2","junos = 23.4"],"patched":["junos 22.4"],"published":"2025-10-09","updated":"2026-10-08","sourceUpdated":"2026-10-08T13:10:00.200","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2025-59980","references":[{"url":"https://supportportal.juniper.net/JSA103167","label":"sirt@juniper.net"}],"tags":["nvd"],"epss":0.00292,"epssPercentile":0.19955,"ingestedAt":"2026-10-08T13:42:55.045Z","slug":"CVE-2025-59980","body":"## Overview\n\nAn Authentication Bypass by Primary Weakness\n\nin the FTP server of Juniper Networks Junos OS allows an unauthenticated, network-based attacker to get limited read-write access to files on the device.\nWhen the FTP server is enabled and a user named \"ftp\" or \"anonymous\" is configured, that user can login without providing the configured password and then has read-write access to their home directory.\n\nThis issue affects Junos OS: \n\n\n\n  *  all versions before 22.4R3-S8,\n  *  23.2 versions before 23.2R2-S3,\n  *  23.4 versions before 23.4R2.\n\n## Affected\n\n- `junos < 22.4`\n- `junos = 22.4`\n- `junos = 23.2`\n- `junos = 23.4`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `junos 22.4`","depth":"sunlit","depthScore":36,"depthScoreParts":{"impact":35.8,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}