{"id":"CVE-2024-21590","aliases":["EUVD-2024-19238","GHSA-53r8-h9fr-mwc7"],"status":"published","title":"Junos OS Evolved: Packets which are not destined to the device can reach the RE","description":"An Improper Input Validation vulnerability in Juniper Tunnel Driver (jtd) and ICMP module of Juniper Networks Junos OS Evolved allows an unauthenticated attacker within the MPLS administrative domain to send specifically crafted packets to the Routing Engine (RE) to cause a Denial of Service (DoS). \n\nWhen specifically crafted transit MPLS IPv4 packets are received by the Packet Forwarding Engine (PFE), these packets are internally forwarded to the RE. Continued receipt of these packets may create a sustained Denial of Service (DoS) condition.\n\nThis issue affects Juniper Networks Junos OS:\n\n  *  All versions before 21.2R3-S8-EVO;\n  *  from 21.4-EVO before 21.4R3-S6-EVO;\n  *  from 22.2-EVO before 22.2R3-S4-EVO;\n  *  from 22.3-EVO before 22.3R3-S3-EVO;\n  *  from 22.4-EVO before 22.4R3-EVO;\n  *  from 23.2-EVO before 23.2R2-EVO.\n  *  from 23.4-EVO before 23.4R1-S1-EVO.","severity":{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.00365,"percentile":0.30656,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2024-04-12T14:53:49Z","modified":"2026-06-17T07:09:46Z","products":[{"vendor":"juniper","product":"junos_os_evolved"},{"vendor":"juniper networks","product":"junos os evolved"}],"references":[{"url":"https://supportportal.juniper.net/JSA75728","tags":["vendor-advisory","x_transferred","Vendor Advisory"]},{"url":"https://www.first.org/cvss/calculator/4.0#CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","tags":["technical-description","x_transferred","Issue Tracking"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-21590"},{"url":"https://github.com/advisories/GHSA-53r8-h9fr-mwc7"}],"sources":{"cve":[{"id":"CVE-2024-21590","title":"Junos OS Evolved: Packets which are not destined to the device can reach the RE","description":"An Improper Input Validation vulnerability in Juniper Tunnel Driver (jtd) and ICMP module of Juniper Networks Junos OS Evolved allows an unauthenticated attacker within the MPLS administrative domain to send specifically crafted packets to the Routing Engine (RE) to cause a Denial of Service (DoS). \n\nWhen specifically crafted transit MPLS IPv4 packets are received by the Packet Forwarding Engine (PFE), these packets are internally forwarded to the RE. Continued receipt of these packets may create a sustained Denial of Service (DoS) condition.\n\nThis issue affects Juniper Networks Junos OS:\n\n  *  All versions before 21.2R3-S8-EVO;\n  *  from 21.4-EVO before 21.4R3-S6-EVO;\n  *  from 22.2-EVO before 22.2R3-S4-EVO;\n  *  from 22.3-EVO before 22.3R3-S3-EVO;\n  *  from 22.4-EVO before 22.4R3-EVO;\n  *  from 23.2-EVO before 23.2R2-EVO.\n  *  from 23.4-EVO before 23.4R1-S1-EVO.","status":"published","published":"2024-04-12T14:53:49.366Z","modified":"2024-08-01T22:27:34.794Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","level":"high","assessor":"cna"},{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:34:04.341725Z"}],"euvd":[{"id":"EUVD-2024-19238","description":"An Improper Input Validation vulnerability in Juniper Tunnel Driver (jtd) and ICMP module of Juniper Networks Junos OS Evolved allows an unauthenticated attacker within the MPLS administrative domain to send specifically crafted packets to the Routing Engine (RE) to cause a Denial of Service (DoS). \n\nWhen specifically crafted transit MPLS IPv4 packets are received by the Packet Forwarding Engine (PFE), these packets are internally forwarded to the RE. Continued receipt of these packets may create a sustained Denial of Service (DoS) condition.\n\nThis issue affects Juniper Networks Junos OS:\n\n  *  All versions before 21.2R3-S8-EVO;\n  *  from 21.4-EVO before 21.4R3-S6-EVO;\n  *  from 22.2-EVO before 22.2R3-S4-EVO;\n  *  from 22.3-EVO before 22.3R3-S3-EVO;\n  *  from 22.4-EVO before 22.4R3-EVO;\n  *  from 23.2-EVO before 23.2R2-EVO.\n  *  from 23.4-EVO before 23.4R1-S1-EVO.","status":"published","published":"2024-04-12T14:53:49Z","modified":"2024-08-01T22:27:34Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N","level":"high"}],"updated_at":"2026-11-03T03:50:29.983832Z"}],"ghsa":[{"id":"GHSA-53r8-h9fr-mwc7","title":"An Improper Input Validation vulnerability in Juniper Tunnel Driver (jtd) and ICMP module of...","description":"An Improper Input Validation vulnerability in Juniper Tunnel Driver (jtd) and ICMP module of Juniper Networks Junos OS Evolved allows an unauthenticated attacker within the MPLS administrative domain to send specifically crafted packets to the Routing Engine (RE) to cause a Denial of Service (DoS). \n\nWhen specifically crafted transit MPLS IPv4 packets are received by the Packet Forwarding Engine (PFE), these packets are internally forwarded to the RE. Continued receipt of these packets may create a sustained Denial of Service (DoS) condition.\n\nThis issue affects Juniper Networks Junos OS:\n\n  *  All versions before 21.2R3-S8-EVO;\n  *  from 21.4-EVO before 21.4R3-S6-EVO;\n  *  from 22.2-EVO before 22.2R3-S4-EVO;\n  *  from 22.3-EVO before 22.3R3-S3-EVO;\n  *  from 22.4-EVO before 22.4R3-EVO;\n  *  from 23.2-EVO before 23.2R2-EVO.\n  *  from 23.4-EVO before 23.4R1-S1-EVO.\n\n\n","status":"published","published":"2024-04-12T15:37:21Z","modified":"2025-01-23T15:32:06Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/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":5.3,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:59:39.148351Z"}],"nvd":[{"id":"CVE-2024-21590","description":"An Improper Input Validation vulnerability in Juniper Tunnel Driver (jtd) and ICMP module of Juniper Networks Junos OS Evolved allows an unauthenticated attacker within the MPLS administrative domain to send specifically crafted packets to the Routing Engine (RE) to cause a Denial of Service (DoS). \n\nWhen specifically crafted transit MPLS IPv4 packets are received by the Packet Forwarding Engine (PFE), these packets are internally forwarded to the RE. Continued receipt of these packets may create a sustained Denial of Service (DoS) condition.\n\nThis issue affects Juniper Networks Junos OS:\n\n  *  All versions before 21.2R3-S8-EVO;\n  *  from 21.4-EVO before 21.4R3-S6-EVO;\n  *  from 22.2-EVO before 22.2R3-S4-EVO;\n  *  from 22.3-EVO before 22.3R3-S3-EVO;\n  *  from 22.4-EVO before 22.4R3-EVO;\n  *  from 23.2-EVO before 23.2R2-EVO.\n  *  from 23.4-EVO before 23.4R1-S1-EVO.","status":"published","published":"2024-04-12T15:15:22.983Z","modified":"2026-06-17T07:09:46.607Z","cvss":[{"version":"4.0","score":7.1,"vector":"CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/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":5.3,"vector":"CVSS:3.1/AV:A/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H","level":"medium","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":"primary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:09:50.299382Z"}]}}