{"id":"CVE-2024-39513","aliases":["EUVD-2024-38039","GHSA-c6q5-vmh3-8544"],"status":"published","title":"Junos OS Evolved: Execution of a specific CLI command will cause a crash in the AFT manager","description":"An Improper Input Validation vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS Evolved allows a local, low-privileged attacker to cause a Denial of Service (DoS).\n\nWhen a specific \"clear\" command is run, the Advanced Forwarding Toolkit manager (evo-aftmand-bt or evo-aftmand-zx) crashes and restarts.\n\nThe crash impacts all traffic going through the FPCs, causing a DoS. Running the command repeatedly leads to a sustained DoS condition.\nThis issue affects Junos OS Evolved: \n\n\n\n  *  All versions before 20.4R3-S9-EVO, \n  *  from 21.2-EVO before 21.2R3-S7-EVO, \n  *  from 21.3-EVO before 21.3R3-S5-EVO, \n  *  from 21.4-EVO before 21.4R3-S6-EVO, \n  *  from 22.1-EVO before 22.1R3-S4-EVO, \n  *  from 22.2-EVO before 22.2R3-S3-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.","severity":{"version":"4.0","score":6.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/R:A","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.00142,"percentile":0.03623,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2024-07-10T23:03:46Z","modified":"2026-06-17T07:42:05Z","products":[{"vendor":"juniper","product":"junos_os_evolved"},{"vendor":"juniper networks","product":"junos os evolved"}],"references":[{"url":"https://supportportal.juniper.net/JSA82978","tags":["vendor-advisory","x_transferred","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-39513"},{"url":"https://github.com/advisories/GHSA-c6q5-vmh3-8544"}],"sources":{"cve":[{"id":"CVE-2024-39513","title":"Junos OS Evolved: Execution of a specific CLI command will cause a crash in the AFT manager","description":"An Improper Input Validation vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS Evolved allows a local, low-privileged attacker to cause a Denial of Service (DoS).\n\nWhen a specific \"clear\" command is run, the Advanced Forwarding Toolkit manager (evo-aftmand-bt or evo-aftmand-zx) crashes and restarts.\n\nThe crash impacts all traffic going through the FPCs, causing a DoS. Running the command repeatedly leads to a sustained DoS condition.\nThis issue affects Junos OS Evolved: \n\n\n\n  *  All versions before 20.4R3-S9-EVO, \n  *  from 21.2-EVO before 21.2R3-S7-EVO, \n  *  from 21.3-EVO before 21.3R3-S5-EVO, \n  *  from 21.4-EVO before 21.4R3-S6-EVO, \n  *  from 22.1-EVO before 22.1R3-S4-EVO, \n  *  from 22.2-EVO before 22.2R3-S3-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.","status":"published","published":"2024-07-10T23:03:46.446Z","modified":"2024-08-02T04:26:15.477Z","cvss":[{"version":"4.0","score":6.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/R:A","level":"medium","assessor":"cna"},{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"cna"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:34:19.28149Z"}],"euvd":[{"id":"EUVD-2024-38039","description":"An Improper Input Validation vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS Evolved allows a local, low-privileged attacker to cause a Denial of Service (DoS).\n\nWhen a specific \"clear\" command is run, the Advanced Forwarding Toolkit manager (evo-aftmand-bt or evo-aftmand-zx) crashes and restarts.\n\nThe crash impacts all traffic going through the FPCs, causing a DoS. Running the command repeatedly leads to a sustained DoS condition.\nThis issue affects Junos OS Evolved: \n\n\n\n  *  All versions before 20.4R3-S9-EVO, \n  *  from 21.2-EVO before 21.2R3-S7-EVO, \n  *  from 21.3-EVO before 21.3R3-S5-EVO, \n  *  from 21.4-EVO before 21.4R3-S6-EVO, \n  *  from 22.1-EVO before 22.1R3-S4-EVO, \n  *  from 22.2-EVO before 22.2R3-S3-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.","status":"published","published":"2024-07-10T23:03:46Z","modified":"2024-08-02T04:26:15Z","cvss":[{"version":"4.0","score":6.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/R:A","level":"medium"}],"updated_at":"2026-11-03T03:50:18.019857Z"}],"ghsa":[{"id":"GHSA-c6q5-vmh3-8544","title":"An Improper Input Validation vulnerability in the Packet Forwarding Engine (PFE) of Juniper...","description":"An Improper Input Validation vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS Evolved allows a local, low-privileged attacker to cause a Denial of Service (DoS).\n\nWhen a specific \"clear\" command is run, the Advanced Forwarding Toolkit manager (evo-aftmand-bt or evo-aftmand-zx) crashes and restarts.\n\nThe crash impacts all traffic going through the FPCs, causing a DoS. Running the command repeatedly leads to a sustained DoS condition.\nThis issue affects Junos OS Evolved: \n\n\n\n  *  All versions before 20.4R3-S9-EVO, \n  *  from 21.2-EVO before 21.2R3-S7-EVO, \n  *  from 21.3-EVO before 21.3R3-S5-EVO, \n  *  from 21.4-EVO before 21.4R3-S6-EVO, \n  *  from 22.1-EVO before 22.1R3-S4-EVO, \n  *  from 22.2-EVO before 22.2R3-S3-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.","status":"published","published":"2024-07-11T00:32:50Z","modified":"2024-08-09T05:01:47Z","cvss":[{"version":"4.0","score":6.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/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:A/V:X/RE:X/U:X","level":"medium"},{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:57:54.57979Z"}],"nvd":[{"id":"CVE-2024-39513","description":"An Improper Input Validation vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS Evolved allows a local, low-privileged attacker to cause a Denial of Service (DoS).\n\nWhen a specific \"clear\" command is run, the Advanced Forwarding Toolkit manager (evo-aftmand-bt or evo-aftmand-zx) crashes and restarts.\n\nThe crash impacts all traffic going through the FPCs, causing a DoS. Running the command repeatedly leads to a sustained DoS condition.\nThis issue affects Junos OS Evolved: \n\n\n\n  *  All versions before 20.4R3-S9-EVO, \n  *  from 21.2-EVO before 21.2R3-S7-EVO, \n  *  from 21.3-EVO before 21.3R3-S5-EVO, \n  *  from 21.4-EVO before 21.4R3-S6-EVO, \n  *  from 22.1-EVO before 22.1R3-S4-EVO, \n  *  from 22.2-EVO before 22.2R3-S3-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.","status":"published","published":"2024-07-10T23:15:10.64Z","modified":"2026-06-17T07:42:05.18Z","cvss":[{"version":"4.0","score":6.8,"vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:H/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:A/V:X/RE:X/U:X","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H","level":"medium","assessor":"secondary"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:10:12.016585Z"}]}}