{"id":"CVE-2026-33775","aliases":["EUVD-2026-21086","GHSA-9p4v-567m-9ggg"],"status":"published","title":"Junos OS: MX Series: Mismatch between configured and received packet types causes memory leak in bbe-smgd","description":"A Missing Release of Memory after Effective Lifetime vulnerability in the BroadBand Edge subscriber management daemon (bbe-smgd) of Juniper Networks Junos OS on MX Series allows an adjacent, unauthenticated attacker to cause a Denial of Service (DoS).\n\nIf the authentication packet-type option is configured and a received packet does not match that packet type, the memory leak occurs. When all memory \n\navailable to bbe-smgd has been consumed, no new subscribers will be able to login.\n\nThe memory utilization of bbe-smgd can be monitored with the following show command:\n\nuser@host\u003e show system processes extensive | match bbe-smgd\n\nThe below log message can be observed when this limit has been reached:\n\nbbesmgd[\u003cPID\u003e]: %DAEMON-3-SMD_DPROF_RSMON_ERROR: Resource unavailability, Reason: Daemon Heap Memory exhaustion\n\n\nThis issue affects Junos OS on MX Series:\n  *  all versions before 22.4R3-S8,\n  *  23.2 versions before 23.2R2-S5,\n  *  23.4 versions before 23.4R2-S6,\n  *  24.2 versions before 24.2R2-S2,\n  *  24.4 versions before 24.4R2,\n  *  25.2 versions before 25.2R2.","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/AU:Y/RE:M","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00204,"percentile":0.10486,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-401"],"published":"2026-04-09T21:30:08Z","modified":"2026-10-26T22:10:00Z","products":[{"vendor":"juniper","product":"junos"},{"vendor":"juniper networks","product":"junos os"}],"references":[{"url":"https://kb.juniper.net/JSA107821","tags":["vendor-advisory","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-33775"},{"url":"https://github.com/advisories/GHSA-9p4v-567m-9ggg"}],"sources":{"cve":[{"id":"CVE-2026-33775","title":"Junos OS: MX Series: Mismatch between configured and received packet types causes memory leak in bbe-smgd","description":"A Missing Release of Memory after Effective Lifetime vulnerability in the BroadBand Edge subscriber management daemon (bbe-smgd) of Juniper Networks Junos OS on MX Series allows an adjacent, unauthenticated attacker to cause a Denial of Service (DoS).\n\nIf the authentication packet-type option is configured and a received packet does not match that packet type, the memory leak occurs. When all memory \n\navailable to bbe-smgd has been consumed, no new subscribers will be able to login.\n\nThe memory utilization of bbe-smgd can be monitored with the following show command:\n\nuser@host\u003e show system processes extensive | match bbe-smgd\n\nThe below log message can be observed when this limit has been reached:\n\nbbesmgd[\u003cPID\u003e]: %DAEMON-3-SMD_DPROF_RSMON_ERROR: Resource unavailability, Reason: Daemon Heap Memory exhaustion\n\n\nThis issue affects Junos OS on MX Series:\n  *  all versions before 22.4R3-S8,\n  *  23.2 versions before 23.2R2-S5,\n  *  23.4 versions before 23.4R2-S6,\n  *  24.2 versions before 24.2R2-S2,\n  *  24.4 versions before 24.4R2,\n  *  25.2 versions before 25.2R2.","status":"published","published":"2026-04-09T21:30:08.528Z","modified":"2026-04-13T18:06:19.695Z","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/AU:Y/RE:M","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":"2026-11-02T14:20:07.609948Z"}],"euvd":[{"id":"EUVD-2026-21086","description":"A Missing Release of Memory after Effective Lifetime vulnerability in the BroadBand Edge subscriber management daemon (bbe-smgd) of Juniper Networks Junos OS on MX Series allows an adjacent, unauthenticated attacker to cause a Denial of Service (DoS).\n\nIf the authentication packet-type option is configured and a received packet does not match that packet type, the memory leak occurs. When all memory \n\navailable to bbe-smgd has been consumed, no new subscribers will be able to login.\n\nThe memory utilization of bbe-smgd can be monitored with the following show command:\n\nuser@host\u003e show system processes extensive | match bbe-smgd\n\nThe below log message can be observed when this limit has been reached:\n\nbbesmgd[\u003cPID\u003e]: %DAEMON-3-SMD_DPROF_RSMON_ERROR: Resource unavailability, Reason: Daemon Heap Memory exhaustion\n\n\nThis issue affects Junos OS on MX Series:\n  *  all versions before 22.4R3-S8,\n  *  23.2 versions before 23.2R2-S5,\n  *  23.4 versions before 23.4R2-S6,\n  *  24.2 versions before 24.2R2-S2,\n  *  24.4 versions before 24.4R2,\n  *  25.2 versions before 25.2R2.","status":"published","published":"2026-04-09T21:30:08Z","modified":"2026-04-13T18:06:19Z","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/AU:Y/RE:M","level":"high"}],"updated_at":"2026-11-02T19:24:27.467761Z"}],"ghsa":[{"id":"GHSA-9p4v-567m-9ggg","title":"A Missing Release of Memory after Effective Lifetime vulnerability in the BroadBand Edge...","description":"A Missing Release of Memory after Effective Lifetime vulnerability in the BroadBand Edge subscriber management daemon (bbe-smgd) of Juniper Networks Junos OS on MX Series allows an adjacent, unauthenticated attacker to cause a Denial of Service (DoS).\n\nIf the authentication packet-type option is configured and a received packet does not match that packet type, the memory leak occurs. When all memory \n\navailable to bbe-smgd has been consumed, no new subscribers will be able to login.\n\nThe memory utilization of bbe-smgd can be monitored with the following show command:\n\nuser@host\u003e show system processes extensive | match bbe-smgd\n\nThe below log message can be observed when this limit has been reached:\n\nbbesmgd[\u003cPID\u003e]: %DAEMON-3-SMD_DPROF_RSMON_ERROR: Resource unavailability, Reason: Daemon Heap Memory exhaustion\n\n\nThis issue affects Junos OS on MX Series:\n  *  all versions before 22.4R3-S8,\n  *  23.2 versions before 23.2R2-S5,\n  *  23.4 versions before 23.4R2-S6,\n  *  24.2 versions before 24.2R2-S2,\n  *  24.4 versions before 24.4R2,\n  *  25.2 versions before 25.2R2.","status":"published","published":"2026-04-10T00:30:29Z","modified":"2026-04-10T00:30:37Z","cvss":[{"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"},{"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:Y/R:X/V:X/RE:M/U:X","level":"high"}],"cwes":["CWE-401"],"updated_at":"2026-11-02T15:07:24.354029Z"}],"nvd":[{"id":"CVE-2026-33775","description":"A Missing Release of Memory after Effective Lifetime vulnerability in the BroadBand Edge subscriber management daemon (bbe-smgd) of Juniper Networks Junos OS on MX Series allows an adjacent, unauthenticated attacker to cause a Denial of Service (DoS).\n\nIf the authentication packet-type option is configured and a received packet does not match that packet type, the memory leak occurs. When all memory \n\navailable to bbe-smgd has been consumed, no new subscribers will be able to login.\n\nThe memory utilization of bbe-smgd can be monitored with the following show command:\n\nuser@host\u003e show system processes extensive | match bbe-smgd\n\nThe below log message can be observed when this limit has been reached:\n\nbbesmgd[\u003cPID\u003e]: %DAEMON-3-SMD_DPROF_RSMON_ERROR: Resource unavailability, Reason: Daemon Heap Memory exhaustion\n\n\nThis issue affects Junos OS on MX Series:\n  *  all versions before 22.4R3-S8,\n  *  23.2 versions before 23.2R2-S5,\n  *  23.4 versions before 23.4R2-S6,\n  *  24.2 versions before 24.2R2-S2,\n  *  24.4 versions before 24.4R2,\n  *  25.2 versions before 25.2R2.","status":"published","published":"2026-04-09T22:16:26.02Z","modified":"2026-10-26T22:10:00.163Z","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:Y/R:X/V:X/RE:M/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":"2026-11-02T14:12:13.902911Z"}]}}