CVSS 3.1 Score 5.3 of 10 (medium)


Published Jan 12, 2024
Updated: Jan 26, 2024
CWE ID 787
CWE ID 122


CVE-2024-21596 is a Heap-based Buffer Overflow vulnerability in the Routing Protocol Daemon (RPD) of Juniper Networks Junos OS and Junos OS Evolved. It allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS) by sending a specific BGP UPDATE message to the device, resulting in a memory overwrite and RPD crash in the backup Routing Engine. This vulnerability affects devices with NSR enabled and requires an established BGP session. It impacts Junos OS versions earlier than 20.4R3-S9 and 21.2, as well as Junos OS Evolved versions earlier than 21.3R3-S5-EVO and 22.3-EVO. The primary RE and traffic are not affected by this issue.

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