{"id":"CVE-2024-39547","aliases":["EUVD-2024-38073","GHSA-37f4-v37x-33qj"],"status":"published","title":"Junos OS and Junos OS Evolved: cRPD: Receipt of crafted TCP traffic can trigger high CPU utilization","description":"An Improper Handling of Exceptional Conditions vulnerability in the rpd-server of Juniper Networks Junos OS and Junos OS Evolved within cRPD allows an unauthenticated network-based attacker sending crafted TCP traffic to the routing engine (RE) to cause a CPU-based Denial of Service (DoS).\n\nIf specially crafted TCP traffic is received by the control plane, or a TCP session terminates unexpectedly, it will cause increased control plane CPU utilization by the rpd-server process.\n\nWhile not explicitly required, the impact is more severe when RIB sharding is enabled.\n\nTask accounting shows unexpected reads by the RPD Server jobs for shards:\n\nuser@junos\u003e show task accounting detail\n...\nread:RPD Server.0.0.0.0+780.192.168.0.78+48886 TOT:00000003.00379787 MAX:00000000.00080516 RUNS: 233888\\\nread:RPD Server.0.0.0.0+780.192.168.0.78+49144 TOT:00000004.00007565 MAX:00000000.00080360 RUNS: 233888\\\nread:RPD Server.0.0.0.0+780.192.168.0.78+49694 TOT:00000003.00600584 MAX:00000000.00080463 RUNS: 233888\\\nread:RPD Server.0.0.0.0+780.192.168.0.78+50246 TOT:00000004.00346998 MAX:00000000.00080338 RUNS: 233888\\\n\n\n\nThis issue affects:\n\nJunos OS with cRPD: \n\n  *  All versions before 21.2R3-S8, \n  *  21.4 before 21.4R3-S7, \n  *  22.1 before 22.1R3-S6, \n  *  22.2 before 22.2R3-S4, \n  *  22.3 before 22.3R3-S3, \n  *  22.4 before 22.4R3-S2, \n  *  23.2 before 23.2R2-S2, \n  *  24.2 before 24.2R2; \n\n\nJunos OS Evolved with cRPD: \n\n  *  All versions before 21.4R3-S7-EVO, \n  *  22.2 before 22.2R3-S4-EVO, \n  *  22.3 before 22.3R3-S3-EVO, \n  *  22.4 before 22.4R3-S2-EVO, \n  *  23.2 before 23.2R2-EVO.","severity":{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:U","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-12","score":0.00966,"percentile":0.62204,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-755"],"published":"2024-10-11T15:20:45Z","modified":"2026-06-17T07:42:11Z","products":[{"vendor":"juniper","product":"junos"},{"vendor":"juniper","product":"junos_containerized_routing_protocol_daemon"},{"vendor":"juniper","product":"junos_evolved"},{"vendor":"juniper networks","product":"junos os"},{"vendor":"juniper networks","product":"junos os evolved"}],"references":[{"url":"https://supportportal.juniper.net/JSA88108","tags":["vendor-advisory","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-39547"},{"url":"https://github.com/advisories/GHSA-37f4-v37x-33qj"}],"sources":{"cve":[{"id":"CVE-2024-39547","title":"Junos OS and Junos OS Evolved: cRPD: Receipt of crafted TCP traffic can trigger high CPU utilization","description":"An Improper Handling of Exceptional Conditions vulnerability in the rpd-server of Juniper Networks Junos OS and Junos OS Evolved within cRPD allows an unauthenticated network-based attacker sending crafted TCP traffic to the routing engine (RE) to cause a CPU-based Denial of Service (DoS).\n\nIf specially crafted TCP traffic is received by the control plane, or a TCP session terminates unexpectedly, it will cause increased control plane CPU utilization by the rpd-server process.\n\nWhile not explicitly required, the impact is more severe when RIB sharding is enabled.\n\nTask accounting shows unexpected reads by the RPD Server jobs for shards:\n\nuser@junos\u003e show task accounting detail\n...\nread:RPD Server.0.0.0.0+780.192.168.0.78+48886 TOT:00000003.00379787 MAX:00000000.00080516 RUNS: 233888\\\nread:RPD Server.0.0.0.0+780.192.168.0.78+49144 TOT:00000004.00007565 MAX:00000000.00080360 RUNS: 233888\\\nread:RPD Server.0.0.0.0+780.192.168.0.78+49694 TOT:00000003.00600584 MAX:00000000.00080463 RUNS: 233888\\\nread:RPD Server.0.0.0.0+780.192.168.0.78+50246 TOT:00000004.00346998 MAX:00000000.00080338 RUNS: 233888\\\n\n\n\nThis issue affects:\n\nJunos OS with cRPD: \n\n  *  All versions before 21.2R3-S8, \n  *  21.4 before 21.4R3-S7, \n  *  22.1 before 22.1R3-S6, \n  *  22.2 before 22.2R3-S4, \n  *  22.3 before 22.3R3-S3, \n  *  22.4 before 22.4R3-S2, \n  *  23.2 before 23.2R2-S2, \n  *  24.2 before 24.2R2; \n\n\nJunos OS Evolved with cRPD: \n\n  *  All versions before 21.4R3-S7-EVO, \n  *  22.2 before 22.2R3-S4-EVO, \n  *  22.3 before 22.3R3-S3-EVO, \n  *  22.4 before 22.4R3-S2-EVO, \n  *  23.2 before 23.2R2-EVO.","status":"published","published":"2024-10-11T15:20:45.121Z","modified":"2024-10-11T18:58:50.795Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:U","level":"high","assessor":"cna"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"cna"}],"cwes":["CWE-755"],"updated_at":"2026-11-02T14:34:19.28149Z"}],"euvd":[{"id":"EUVD-2024-38073","description":"An Improper Handling of Exceptional Conditions vulnerability in the rpd-server of Juniper Networks Junos OS and Junos OS Evolved within cRPD allows an unauthenticated network-based attacker sending crafted TCP traffic to the routing engine (RE) to cause a CPU-based Denial of Service (DoS).\n\nIf specially crafted TCP traffic is received by the control plane, or a TCP session terminates unexpectedly, it will cause increased control plane CPU utilization by the rpd-server process.\n\nWhile not explicitly required, the impact is more severe when RIB sharding is enabled.\n\nTask accounting shows unexpected reads by the RPD Server jobs for shards:\n\nuser@junos\u003e show task accounting detail\n...\nread:RPD Server.0.0.0.0+780.192.168.0.78+48886 TOT:00000003.00379787 MAX:00000000.00080516 RUNS: 233888\\\nread:RPD Server.0.0.0.0+780.192.168.0.78+49144 TOT:00000004.00007565 MAX:00000000.00080360 RUNS: 233888\\\nread:RPD Server.0.0.0.0+780.192.168.0.78+49694 TOT:00000003.00600584 MAX:00000000.00080463 RUNS: 233888\\\nread:RPD Server.0.0.0.0+780.192.168.0.78+50246 TOT:00000004.00346998 MAX:00000000.00080338 RUNS: 233888\\\n\n\n\nThis issue affects:\n\nJunos OS with cRPD: \n\n  *  All versions before 21.2R3-S8, \n  *  21.4 before 21.4R3-S7, \n  *  22.1 before 22.1R3-S6, \n  *  22.2 before 22.2R3-S4, \n  *  22.3 before 22.3R3-S3, \n  *  22.4 before 22.4R3-S2, \n  *  23.2 before 23.2R2-S2, \n  *  24.2 before 24.2R2; \n\n\nJunos OS Evolved with cRPD: \n\n  *  All versions before 21.4R3-S7-EVO, \n  *  22.2 before 22.2R3-S4-EVO, \n  *  22.3 before 22.3R3-S3-EVO, \n  *  22.4 before 22.4R3-S2-EVO, \n  *  23.2 before 23.2R2-EVO.","status":"published","published":"2024-10-11T15:20:45Z","modified":"2024-10-11T18:58:50Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:U","level":"high"}],"updated_at":"2026-11-03T00:27:38.618953Z"}],"ghsa":[{"id":"GHSA-37f4-v37x-33qj","title":"An Improper Handling of Exceptional Conditions vulnerability in the rpd-server of Juniper...","description":"An Improper Handling of Exceptional Conditions vulnerability in the rpd-server of Juniper Networks Junos OS and Junos OS Evolved within cRPD allows an unauthenticated network-based attacker sending crafted TCP traffic to the routing engine (RE) to cause a CPU-based Denial of Service (DoS).\n\nIf specially crafted TCP traffic is received by the control plane, or a TCP session terminates unexpectedly, it will cause increased control plane CPU utilization by the rpd-server process.\n\nWhile not explicitly required, the impact is more severe when RIB sharding is enabled.\n\nTask accounting shows unexpected reads by the RPD Server jobs for shards:\n\nuser@junos\u003e show task accounting detail\n...\nread:RPD Server.0.0.0.0+780.192.168.0.78+48886 TOT:00000003.00379787 MAX:00000000.00080516 RUNS: 233888\\\nread:RPD Server.0.0.0.0+780.192.168.0.78+49144 TOT:00000004.00007565 MAX:00000000.00080360 RUNS: 233888\\\nread:RPD Server.0.0.0.0+780.192.168.0.78+49694 TOT:00000003.00600584 MAX:00000000.00080463 RUNS: 233888\\\nread:RPD Server.0.0.0.0+780.192.168.0.78+50246 TOT:00000004.00346998 MAX:00000000.00080338 RUNS: 233888\\\n\n\n\nThis issue affects:\n\nJunos OS with cRPD: \n\n  *  All versions before 21.2R3-S8, \n  *  21.4 before 21.4R3-S7, \n  *  22.1 before 22.1R3-S6, \n  *  22.2 before 22.2R3-S4, \n  *  22.3 before 22.3R3-S3, \n  *  22.4 before 22.4R3-S2, \n  *  23.2 before 23.2R2-S2, \n  *  24.2 before 24.2R2; \n\n\nJunos OS Evolved with cRPD: \n\n  *  All versions before 21.4R3-S7-EVO, \n  *  22.2 before 22.2R3-S4-EVO, \n  *  22.3 before 22.3R3-S3-EVO, \n  *  22.4 before 22.4R3-S2-EVO, \n  *  23.2 before 23.2R2-EVO.","status":"published","published":"2024-10-11T18:32:49Z","modified":"2024-10-11T18:32:55Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/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:U/V:X/RE:X/U:X","level":"high"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high"}],"cwes":["CWE-755"],"updated_at":"2026-11-02T14:58:29.079883Z"}],"nvd":[{"id":"CVE-2024-39547","description":"An Improper Handling of Exceptional Conditions vulnerability in the rpd-server of Juniper Networks Junos OS and Junos OS Evolved within cRPD allows an unauthenticated network-based attacker sending crafted TCP traffic to the routing engine (RE) to cause a CPU-based Denial of Service (DoS).\n\nIf specially crafted TCP traffic is received by the control plane, or a TCP session terminates unexpectedly, it will cause increased control plane CPU utilization by the rpd-server process.\n\nWhile not explicitly required, the impact is more severe when RIB sharding is enabled.\n\nTask accounting shows unexpected reads by the RPD Server jobs for shards:\n\nuser@junos\u003e show task accounting detail\n...\nread:RPD Server.0.0.0.0+780.192.168.0.78+48886 TOT:00000003.00379787 MAX:00000000.00080516 RUNS: 233888\\\nread:RPD Server.0.0.0.0+780.192.168.0.78+49144 TOT:00000004.00007565 MAX:00000000.00080360 RUNS: 233888\\\nread:RPD Server.0.0.0.0+780.192.168.0.78+49694 TOT:00000003.00600584 MAX:00000000.00080463 RUNS: 233888\\\nread:RPD Server.0.0.0.0+780.192.168.0.78+50246 TOT:00000004.00346998 MAX:00000000.00080338 RUNS: 233888\\\n\n\n\nThis issue affects:\n\nJunos OS with cRPD: \n\n  *  All versions before 21.2R3-S8, \n  *  21.4 before 21.4R3-S7, \n  *  22.1 before 22.1R3-S6, \n  *  22.2 before 22.2R3-S4, \n  *  22.3 before 22.3R3-S3, \n  *  22.4 before 22.4R3-S2, \n  *  23.2 before 23.2R2-S2, \n  *  24.2 before 24.2R2; \n\n\nJunos OS Evolved with cRPD: \n\n  *  All versions before 21.4R3-S7-EVO, \n  *  22.2 before 22.2R3-S4-EVO, \n  *  22.3 before 22.3R3-S3-EVO, \n  *  22.4 before 22.4R3-S2-EVO, \n  *  23.2 before 23.2R2-EVO.","status":"published","published":"2024-10-11T16:15:07.483Z","modified":"2026-06-17T07:42:11.337Z","cvss":[{"version":"4.0","score":8.7,"vector":"CVSS:4.0/AV:N/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:U/V:X/RE:X/U:X","level":"high","assessor":"secondary"},{"version":"3.1","score":7.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-755"],"updated_at":"2026-11-02T14:10:31.879321Z"}]}}