{"id":"CVE-2024-39539","aliases":["EUVD-2024-38065","GHSA-5gvg-fggq-r6f6"],"status":"published","title":"Junos OS: MX Series: Continuous subscriber logins will lead to a memory leak and eventually an FPC crash","description":"A Missing Release of Memory after Effective Lifetime vulnerability in Juniper Networks Junos OS on MX Series allows an unauthenticated adjacent attacker to cause a Denial-of-Service (DoS).\n\nIn a subscriber management scenario continuous subscriber logins will trigger a memory leak and eventually lead to an FPC crash and restart.\n\nThis issue affects Junos OS on MX Series:\n\n\n\n  *  All version before 21.2R3-S6,\n  *  21.4 versions before 21.4R3-S6,\n  *  22.1 versions before 22.1R3-S5,\n  *  22.2 versions before 22.2R3-S3, \n  *  22.3 versions before 22.3R3-S2,\n  *  22.4 versions before 22.4R3,\n  *  23.2 versions before 23.2R2.","severity":{"version":"4.0","score":6,"vector":"CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00217,"percentile":0.12245,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-401"],"published":"2024-07-11T16:15:57Z","modified":"2026-06-17T07:42:09Z","products":[{"vendor":"juniper","product":"junos"},{"vendor":"juniper networks","product":"junos os"}],"references":[{"url":"https://supportportal.juniper.net/JSA82999","tags":["vendor-advisory","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-39539"},{"url":"https://github.com/advisories/GHSA-5gvg-fggq-r6f6"}],"sources":{"cve":[{"id":"CVE-2024-39539","title":"Junos OS: MX Series: Continuous subscriber logins will lead to a memory leak and eventually an FPC crash","description":"A Missing Release of Memory after Effective Lifetime vulnerability in Juniper Networks Junos OS on MX Series allows an unauthenticated adjacent attacker to cause a Denial-of-Service (DoS).\n\nIn a subscriber management scenario continuous subscriber logins will trigger a memory leak and eventually lead to an FPC crash and restart.\n\nThis issue affects Junos OS on MX Series:\n\n\n\n  *  All version before 21.2R3-S6,\n  *  21.4 versions before 21.4R3-S6,\n  *  22.1 versions before 22.1R3-S5,\n  *  22.2 versions before 22.2R3-S3, \n  *  22.3 versions before 22.3R3-S2,\n  *  22.4 versions before 22.4R3,\n  *  23.2 versions before 23.2R2.","status":"published","published":"2024-07-11T16:15:57.431Z","modified":"2024-08-02T04:26:15.901Z","cvss":[{"version":"4.0","score":6,"vector":"CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L","level":"medium","assessor":"cna"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-401"],"updated_at":"2026-11-02T14:34:18.951288Z"}],"euvd":[{"id":"EUVD-2024-38065","description":"A Missing Release of Memory after Effective Lifetime vulnerability in Juniper Networks Junos OS on MX Series allows an unauthenticated adjacent attacker to cause a Denial-of-Service (DoS).\n\nIn a subscriber management scenario continuous subscriber logins will trigger a memory leak and eventually lead to an FPC crash and restart.\n\nThis issue affects Junos OS on MX Series:\n\n\n\n  *  All version before 21.2R3-S6,\n  *  21.4 versions before 21.4R3-S6,\n  *  22.1 versions before 22.1R3-S5,\n  *  22.2 versions before 22.2R3-S3, \n  *  22.3 versions before 22.3R3-S2,\n  *  22.4 versions before 22.4R3,\n  *  23.2 versions before 23.2R2.","status":"published","published":"2024-07-11T16:15:57Z","modified":"2024-08-02T04:26:15Z","cvss":[{"version":"4.0","score":6,"vector":"CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L","level":"medium"}],"updated_at":"2026-11-03T03:50:18.019857Z"}],"ghsa":[{"id":"GHSA-5gvg-fggq-r6f6","title":"A Missing Release of Memory after Effective Lifetime vulnerability in Juniper Networks Junos OS...","description":"A Missing Release of Memory after Effective Lifetime vulnerability in Juniper Networks Junos OS on MX Series allows an unauthenticated adjacent attacker to cause a Denial-of-Service (DoS).\n\nIn a subscriber management scenario continuous subscriber logins will trigger a memory leak and eventually lead to an FPC crash and restart.\n\nThis issue affects Junos OS on MX Series:\n\n\n\n  *  All version before 21.2R3-S6,\n  *  21.4 versions before 21.4R3-S6,\n  *  22.1 versions before 22.1R3-S5,\n  *  22.2 versions before 22.2R3-S3, \n  *  22.3 versions before 22.3R3-S2,\n  *  22.4 versions before 22.4R3,\n  *  23.2 versions before 23.2R2.","status":"published","published":"2024-07-11T18:31:13Z","modified":"2024-07-31T05:02:58Z","cvss":[{"version":"4.0","score":6,"vector":"CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/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:X/R:X/V:X/RE:X/U:X","level":"medium"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-401"],"updated_at":"2026-11-02T14:57:45.682811Z"}],"nvd":[{"id":"CVE-2024-39539","description":"A Missing Release of Memory after Effective Lifetime vulnerability in Juniper Networks Junos OS on MX Series allows an unauthenticated adjacent attacker to cause a Denial-of-Service (DoS).\n\nIn a subscriber management scenario continuous subscriber logins will trigger a memory leak and eventually lead to an FPC crash and restart.\n\nThis issue affects Junos OS on MX Series:\n\n\n\n  *  All version before 21.2R3-S6,\n  *  21.4 versions before 21.4R3-S6,\n  *  22.1 versions before 22.1R3-S5,\n  *  22.2 versions before 22.2R3-S3, \n  *  22.3 versions before 22.3R3-S2,\n  *  22.4 versions before 22.4R3,\n  *  23.2 versions before 23.2R2.","status":"published","published":"2024-07-11T17:15:12.633Z","modified":"2026-06-17T07:42:09.903Z","cvss":[{"version":"4.0","score":6,"vector":"CVSS:4.0/AV:A/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/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:X/R:X/V:X/RE:X/U:X","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-401"],"updated_at":"2026-11-02T14:10:12.994089Z"}]}}