{"cve":{"cve_id":"CVE-2024-39520","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.0025,"epss_percentile":0.1601,"epss_as_of":"2026-06-23","description":"An Improper Neutralization of Special Elements vulnerability in Juniper Networks Junos OS Evolved commands allows a local, authenticated attacker with low privileges to escalate their privileges to 'root' leading to a full compromise of the system.\n\nThe Junos OS Evolved CLI doesn't properly handle command options in some cases, allowing users which execute specific CLI commands with a crafted set of parameters to escalate their privileges to root on shell level.\n\nThis issue affects Junos OS Evolved:\n\n  *  All version before 20.4R3-S6-EVO, \n  *  21.2-EVO versions before 21.2R3-S4-EVO,\n  *  21.4-EVO versions before 21.4R3-S6-EVO, \n  *  22.2-EVO versions before 22.2R2-S1-EVO, 22.2R3-EVO, \n  *  22.3-EVO versions before 22.3R2-EVO.","published_at":"2024-07-11T15:56:53.855000Z","last_modified_at":null,"cvss_v3_score":7.8,"cvss_v3_vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","cvss_v3_severity":"HIGH","cvss_v4_score":8.5,"cvss_v4_vector":"CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","cvss_v4_severity":"HIGH","ssvc_decision":null,"ssvc_exploitation":"none","ssvc_automatable":false,"ssvc_technical_impact":"total","cwes":["CWE-78"],"nvd_references":["https://supportportal.juniper.net/JSA82975"],"vuln_status":null,"trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-24T00:09:39.878444Z","updated_at":"2026-06-29T02:02:46.435981Z"},"effective_severity":"HIGH","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"L","value_label":"Local"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"L","value_label":"Low"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"U","value_label":"Unchanged"},{"metric":"C","name":"Confidentiality","value":"H","value_label":"High"},{"metric":"I","name":"Integrity","value":"H","value_label":"High"},{"metric":"A","name":"Availability","value":"H","value_label":"High"}]},"cvss_v4_decoded":{"version":"4.0","metrics":[{"metric":"AV","name":"Attack Vector","value":"L","value_label":"Local"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"AT","name":"Attack Requirements","value":"N","value_label":"None"},{"metric":"PR","name":"Privileges Required","value":"L","value_label":"Low"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"VC","name":"Confidentiality (Vulnerable System)","value":"H","value_label":"High"},{"metric":"VI","name":"Integrity (Vulnerable System)","value":"H","value_label":"High"},{"metric":"VA","name":"Availability (Vulnerable System)","value":"H","value_label":"High"},{"metric":"SC","name":"Confidentiality (Subsequent System)","value":"N","value_label":"None"},{"metric":"SI","name":"Integrity (Subsequent System)","value":"N","value_label":"None"},{"metric":"SA","name":"Availability (Subsequent System)","value":"N","value_label":"None"}]},"affected":[{"vendor_slug":"juniper-networks","vendor_name":"Juniper Networks","product_slug":"junos-os-evolved","product_name":"Junos OS Evolved","version_start":"0","version_start_inclusive":true,"version_end":"20.4R3-S6-EVO","version_end_inclusive":false,"cpe23_uri":"cve5:juniper-networks:junos-os-evolved:0:20.4R3-S6-EVO"},{"vendor_slug":"juniper-networks","vendor_name":"Juniper Networks","product_slug":"junos-os-evolved","product_name":"Junos OS Evolved","version_start":"21.2-EVO","version_start_inclusive":true,"version_end":"21.2R3-S4-EVO","version_end_inclusive":false,"cpe23_uri":"cve5:juniper-networks:junos-os-evolved:21.2-EVO:21.2R3-S4-EVO"},{"vendor_slug":"juniper-networks","vendor_name":"Juniper Networks","product_slug":"junos-os-evolved","product_name":"Junos OS Evolved","version_start":"21.4-EVO","version_start_inclusive":true,"version_end":"21.4R3-S6-EVO","version_end_inclusive":false,"cpe23_uri":"cve5:juniper-networks:junos-os-evolved:21.4-EVO:21.4R3-S6-EVO"},{"vendor_slug":"juniper-networks","vendor_name":"Juniper Networks","product_slug":"junos-os-evolved","product_name":"Junos OS Evolved","version_start":"22.2-EVO","version_start_inclusive":true,"version_end":"22.2R2-S1-EVO, 22.2R3-EVO","version_end_inclusive":false,"cpe23_uri":"cve5:juniper-networks:junos-os-evolved:22.2-EVO:22.2R2-S1-EVO, 22.2R3-EVO"},{"vendor_slug":"juniper-networks","vendor_name":"Juniper Networks","product_slug":"junos-os-evolved","product_name":"Junos OS Evolved","version_start":"22.3-EVO","version_start_inclusive":true,"version_end":"22.3R2-EVO","version_end_inclusive":false,"cpe23_uri":"cve5:juniper-networks:junos-os-evolved:22.3-EVO:22.3R2-EVO"}],"exploit_refs":[],"news":[],"references":[{"url":"https://supportportal.juniper.net/JSA82975","source_type":"MISC","tags":[]}],"timeline":[{"type":"published","at":"2024-07-11T15:56:53.855000Z","label":"CVE published","source":null},{"type":"cvss_changed","at":"2026-06-28T17:36:45.073514Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:36:45.073514Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:36:45.073514Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:36:45.073514Z","label":"CVSS score 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