{"cve":"CVE-2024-47489","nvd":{"published":"2024-10-11T16:15:08.533","modified":"2026-06-17T07:57:09.963","status":"Analyzed","description":"An Improper Handling of Exceptional Conditions vulnerability in the Packet Forwarding Engine (pfe) of the Juniper Networks Junos OS Evolved on ACX Series devices allows an unauthenticated, network based attacker sending specific transit protocol traffic to cause a partial Denial of Service (DoS) to downstream devices.\n\nReceipt of specific transit protocol packets is incorrectly processed by the Routing Engine (RE), filling up the DDoS protection queue which is shared between routing protocols. This influx of transit protocol packets causes DDoS protection violations, resulting in protocol flaps which can affect connectivity to networking devices.\n\nThis issue affects both IPv4 and IPv6. This issue does not require any specific routing protocol to be configured or enabled.\n\nThe following commands can be used to monitor the DDoS protection queue:\n\n       labuser@re0> show evo-pfemand host pkt-stats\n\n    labuser@re0> show host-path ddos all-policers\n\nThis issue affects Junos OS Evolved: \n\n\n\n  *  All versions before 21.4R3-S8-EVO, \n  *  from 22.2 before 22.2R3-S4-EVO, \n  *  from 22.3 before 22.3R3-S4-EVO, \n  *  from 22.4 before 22.4R3-S3-EVO, \n  *  from 23.2 before 23.2R2-EVO, \n  *  from 23.4 before 23.4R1-S1-EVO, 23.4R2-EVO, \n  *  from 24.2 before 24.2R2-EVO.","cvss_v4":{"vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:L/R:A","score":6.9},"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:N/I:N/A:L","score":5.8},"cwes":["CWE-755"],"references":["https://supportportal.juniper.net/"],"products":["juniper:junos_os_evolved"],"source":"nvd","synced_at":"2026-10-19T21:55:31.737901711+00:00"},"epss":{"cve":"CVE-2024-47489","score":0.00658,"percentile":0.51475,"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."]}