{"cve":"CVE-2024-39547","nvd":{"published":"2024-10-11T16:15:07.483","modified":"2026-06-17T07:42:11.337","status":"Analyzed","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> 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.","cvss_v4":{"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","score":8.7},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-755"],"references":["https://supportportal.juniper.net/JSA88108"],"products":["juniper:junos_containerized_routing_protocol_daemon"],"source":"nvd","synced_at":"2026-10-19T21:55:31.737901711+00:00"},"epss":{"cve":"CVE-2024-39547","score":0.00966,"percentile":0.61744,"date":"2026-10-31"},"kev":null,"osv":[],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}