{"id":"CVE-2025-30647","aliases":["EUVD-2025-10524","GHSA-f7rm-gv39-r2j5"],"status":"published","title":"Junos OS: MX Series: Subscriber login/logout activity will lead to a memory leak","description":"A Missing Release of Memory after Effective Lifetime vulnerability in the packet forwarding engine (PFE) of 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, login/logout activity triggers a memory leak, and the leaked memory gradually increments and eventually results in a crash. \n   \n           user@host\u003e show chassis fpc\n                                       Temp    CPU Utilization (%)   CPU Utilization (%)   Memory      Utilization (%)\n                      Slot State       (C)     Total   Interrupt      1min   5min  15min    DRAM (MB)  Heap     Buffer\n\n                      2  Online         36        10          0          9      8      9         32768       26          0\n                                                                                                     \n\nThis issue affects Junos OS on MX Series: \n  *  All versions before 21.2R3-S9\n  *  from 21.4 before 21.4R3-S10\n  *  from 22.2 before 22.2R3-S6\n  *  from 22.4 before 22.4R3-S5\n  *  from 23.2 before 23.2R2-S3\n  *  from 23.4 before 23.4R2-S3\n  *  from 24.2 before 24.2R2.","severity":{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.0025,"percentile":0.16522,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-401"],"published":"2025-04-09T19:53:59Z","modified":"2026-06-17T09:09:05Z","products":[{"vendor":"juniper","product":"junos"},{"vendor":"juniper networks","product":"junos os"}],"references":[{"url":"https://supportportal.juniper.net/JSA96457","tags":["vendor-advisory","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-30647"},{"url":"https://github.com/advisories/GHSA-f7rm-gv39-r2j5"}],"sources":{"cve":[{"id":"CVE-2025-30647","title":"Junos OS: MX Series: Subscriber login/logout activity will lead to a memory leak","description":"A Missing Release of Memory after Effective Lifetime vulnerability in the packet forwarding engine (PFE) of 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, login/logout activity triggers a memory leak, and the leaked memory gradually increments and eventually results in a crash. \n   \n           user@host\u003e show chassis fpc\n                                       Temp    CPU Utilization (%)   CPU Utilization (%)   Memory      Utilization (%)\n                      Slot State       (C)     Total   Interrupt      1min   5min  15min    DRAM (MB)  Heap     Buffer\n\n                      2  Online         36        10          0          9      8      9         32768       26          0\n                                                                                                     \n\nThis issue affects Junos OS on MX Series: \n  *  All versions before 21.2R3-S9\n  *  from 21.4 before 21.4R3-S10\n  *  from 22.2 before 22.2R3-S6\n  *  from 22.4 before 22.4R3-S5\n  *  from 23.2 before 23.2R2-S3\n  *  from 23.4 before 23.4R2-S3\n  *  from 24.2 before 24.2R2.","status":"published","published":"2025-04-09T19:53:59.529Z","modified":"2025-04-09T20:07:25.649Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L","level":"high","assessor":"cna"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-401"],"updated_at":"2026-11-02T14:32:35.418416Z"}],"euvd":[{"id":"EUVD-2025-10524","description":"A Missing Release of Memory after Effective Lifetime vulnerability in the packet forwarding engine (PFE) of 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, login/logout activity triggers a memory leak, and the leaked memory gradually increments and eventually results in a crash. \n   \n           user@host\u003e show chassis fpc\n                                       Temp    CPU Utilization (%)   CPU Utilization (%)   Memory      Utilization (%)\n                      Slot State       (C)     Total   Interrupt      1min   5min  15min    DRAM (MB)  Heap     Buffer\n\n                      2  Online         36        10          0          9      8      9         32768       26          0\n                                                                                                     \n\nThis issue affects Junos OS on MX Series: \n  *  All versions before 21.2R3-S9\n  *  from 21.4 before 21.4R3-S10\n  *  from 22.2 before 22.2R3-S6\n  *  from 22.4 before 22.4R3-S5\n  *  from 23.2 before 23.2R2-S3\n  *  from 23.4 before 23.4R2-S3\n  *  from 24.2 before 24.2R2.","status":"published","published":"2025-04-09T19:53:59Z","modified":"2025-04-09T20:07:25Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L","level":"high"}],"updated_at":"2026-11-02T20:52:37.733624Z"}],"ghsa":[{"id":"GHSA-f7rm-gv39-r2j5","title":"A Missing Release of Memory after Effective Lifetime vulnerability in the packet forwarding...","description":"A Missing Release of Memory after Effective Lifetime vulnerability in the packet forwarding engine (PFE) of 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, login/logout activity triggers a memory leak, and the leaked memory gradually increments and eventually results in a crash. \n   \n           user@host\u003e show chassis fpc\n                                       Temp    CPU Utilization (%)   CPU Utilization (%)   Memory      Utilization (%)\n                      Slot State       (C)     Total   Interrupt      1min   5min  15min    DRAM (MB)  Heap     Buffer\n\n                      2  Online         36        10          0          9      8      9         32768       26          0\n                                                                                                     \n\nThis issue affects Junos OS on MX Series: \n  *  All versions before 21.2R3-S9\n  *  from 21.4 before 21.4R3-S10\n  *  from 22.2 before 22.2R3-S6\n  *  from 22.4 before 22.4R3-S5\n  *  from 23.2 before 23.2R2-S3\n  *  from 23.4 before 23.4R2-S3\n  *  from 24.2 before 24.2R2.","status":"published","published":"2025-04-09T21:31:43Z","modified":"2025-04-09T21:31:51Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/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":"high"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-401"],"updated_at":"2026-11-02T15:01:03.275422Z"}],"nvd":[{"id":"CVE-2025-30647","description":"A Missing Release of Memory after Effective Lifetime vulnerability in the packet forwarding engine (PFE) of 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, login/logout activity triggers a memory leak, and the leaked memory gradually increments and eventually results in a crash. \n   \n           user@host\u003e show chassis fpc\n                                       Temp    CPU Utilization (%)   CPU Utilization (%)   Memory      Utilization (%)\n                      Slot State       (C)     Total   Interrupt      1min   5min  15min    DRAM (MB)  Heap     Buffer\n\n                      2  Online         36        10          0          9      8      9         32768       26          0\n                                                                                                     \n\nThis issue affects Junos OS on MX Series: \n  *  All versions before 21.2R3-S9\n  *  from 21.4 before 21.4R3-S10\n  *  from 22.2 before 22.2R3-S6\n  *  from 22.4 before 22.4R3-S5\n  *  from 23.2 before 23.2R2-S3\n  *  from 23.4 before 23.4R2-S3\n  *  from 24.2 before 24.2R2.","status":"published","published":"2025-04-09T20:15:28.103Z","modified":"2026-06-17T09:09:05.797Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/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":"high","assessor":"secondary"},{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-401"],"updated_at":"2026-11-02T14:11:00.087098Z"}]}}