{"id":"CVE-2024-39513","url":"https://www.cyber-defence.io/tools/cve/CVE-2024-39513","generatedAt":"2026-10-28T02:17:58.420Z","title":"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).","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.","published":"2024-07-10T23:15:11.000Z","lastModified":"2026-06-17T07:42:05.000Z","status":"Analyzed","sourceIdentifier":"sirt@juniper.net","cvss":{"version":"4.0","score":6.8,"severity":"MEDIUM","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/M"},"cwe":["CWE-20"],"affected":["juniper/junos os evolved"],"epss":{"score":0.00142,"percentile":0.03523,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (0.14%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://supportportal.juniper.net/JSA82978","tags":["Vendor Advisory"],"source":"sirt@juniper.net"},{"url":"https://supportportal.juniper.net/JSA82978","tags":["Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2024-39513","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}