{"schemaVersion":3,"id":"CVE-2025-52946","aliases":[],"status":"published","duplicateOf":null,"title":null,"description":"A Use After Free vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Juniper Networks Junos OS Evolved allows an attacker sending a BGP update with a specifically malformed AS PATH to cause rpd to crash, resulting in a Denial of Service (DoS). Continuous receipt of the malformed AS PATH attribute will cause a sustained DoS condition.\n\nOn all Junos OS and Junos OS Evolved platforms, the rpd process will crash and restart when a specifically malformed AS PATH is received within a BGP update and traceoptions are enabled.\n\nThis issue only affects systems with BGP traceoptions enabled and requires a BGP session to be already established.  Systems without BGP traceoptions enabled are not impacted by this issue.\n\n\n\nThis issue affects:\n\n Junos OS:\n\n\n\n  *  All versions before 21.2R3-S9,\n  *  all versions of 21.4,\n  *  from 22.2 before 22.2R3-S6,\n  *  from 22.4 before 22.4R3-S5,\n  *  from 23.2 before 23.2R2-S3,\n  *  from 23.4 before 23.4R2-S4,\n  *  from 24.2 before 24.2R2;\n\n\n\n\nJunos OS Evolved:\n\n\n\n  *  All versions before 22.4R3-S5-EVO,\n  *  from 23.2-EVO before 23.2R2-S3-EVO,\n  *  from 23.4-EVO before 23.4R2-S4-EVO,\n  *  from 24.2-EVO before 24.2R2-EVO.\n\n\n\n\n\n\n\nThis is a more complete fix for previously published CVE-2024-39549 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At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory \"belongs\" to the code that operates on the new pointer.","type":"weakness","status":"Stable","abstraction":"Variant","likelihoodOfExploit":"High","url":"https://cwe.mitre.org/data/definitions/416.html"}],"affected":[{"vendor":"juniper networks","product":"junos os","name":"Junos OS","label":"junos os","ecosystem":null,"cpePart":"a","purl":null,"purlType":null,"versions":[{"text":"< 21.2R3-S9","noFixRecorded":false,"fixedIn":null},{"text":"≥ 21.4","noFixRecorded":true,"fixedIn":null},{"text":"≥ 22.2, < 22.2R3-S6","noFixRecorded":false,"fixedIn":null},{"text":"≥ 22.4, < 22.4R3-S5","noFixRecorded":false,"fixedIn":null},{"text":"≥ 23.2, < 23.2R2-S3","noFixRecorded":false,"fixedIn":null},{"text":"≥ 23.4, < 23.4R2-S4","noFixRecorded":false,"fixedIn":null},{"text":"≥ 24.2, < 24.2R2","noFixRecorded":false,"fixedIn":null}],"versionsText":"< 21.2R3-S9 | ≥ 21.4 (No fix recorded) | ≥ 22.2, < 22.2R3-S6 | ≥ 22.4, < 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