{"id":"CVE-2025-59980","aliases":["EUVD-2025-33387","GHSA-2r3j-v23v-hx4j"],"status":"published","title":"Junos OS: When a user with the name ftp or anonymous is configured unauthenticated filesystem access is allowed","description":"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 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.","severity":{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/AU:Y/RE:M","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00292,"percentile":0.22061,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-305"],"published":"2025-10-09T16:05:17Z","modified":"2026-10-08T13:10:00Z","products":[{"vendor":"juniper","product":"junos"},{"vendor":"juniper networks","product":"junos os"}],"references":[{"url":"https://supportportal.juniper.net/JSA103167","tags":["vendor-advisory","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-59980"},{"url":"https://github.com/advisories/GHSA-2r3j-v23v-hx4j"}],"sources":{"cve":[{"id":"CVE-2025-59980","title":"Junos OS: When a user with the name ftp or anonymous is configured unauthenticated filesystem access is allowed","description":"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 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.","status":"published","published":"2025-10-09T16:05:17.009Z","modified":"2025-10-10T14:41:12.698Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/AU:Y/RE:M","level":"medium","assessor":"cna"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"cna"}],"cwes":["CWE-305"],"updated_at":"2026-11-02T14:32:47.812946Z"}],"euvd":[{"id":"EUVD-2025-33387","description":"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 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.","status":"published","published":"2025-10-09T16:05:17Z","modified":"2025-10-10T14:41:12Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/AU:Y/RE:M","level":"medium"}],"updated_at":"2026-11-02T20:31:33.954405Z"}],"ghsa":[{"id":"GHSA-2r3j-v23v-hx4j","title":"An Authentication Bypass by Primary Weakness\n\nin the FTP server of Juniper Networks Junos OS...","description":"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 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.","status":"published","published":"2025-10-09T18:30:36Z","modified":"2025-10-09T18:30:44Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:X/V:X/RE:M/U:X","level":"medium"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium"}],"cwes":["CWE-305"],"updated_at":"2026-11-02T15:03:54.922073Z"}],"nvd":[{"id":"CVE-2025-59980","description":"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 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.","status":"published","published":"2025-10-09T17:15:59.427Z","modified":"2026-10-08T13:10:00.2Z","cvss":[{"version":"4.0","score":6.9,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:X/V:X/RE:M/U:X","level":"medium","assessor":"secondary"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-305"],"updated_at":"2026-11-02T14:11:35.93863Z"}]}}