CVE-2025-52964

MEDIUM

Juniper Junos < 21.4 - Reachable Assertion

Title source: rule
STIX 2.1

Description

A Reachable Assertion vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS). When the device receives a specific BGP UPDATE packet, the rpd crashes and restarts. Continuous receipt of this specific packet will cause a sustained DoS condition. For the issue to occur, BGP multipath with "pause-computation-during-churn" must be configured on the device, and the attacker must send the paths via a BGP UPDATE from a established BGP peer. This issue affects: Junos OS: * All versions before 21.4R3-S7, * from 22.3 before 22.3R3-S3, * from 22.4 before 22.4R3-S5, * from 23.2 before 23.2R2, * from 23.4 before 23.4R2. Junos OS Evolved: * All versions before 21.4R3-S7-EVO, * from 22.3 before 22.3R3-S3-EVO, * from 22.4 before 22.4R3-S5-EVO, * from 23.2 before 23.2R2-EVO, * from 23.4 before 23.4R2-EVO.

Scores

CVSS v3 6.5
EPSS 0.0002
EPSS Percentile 4.0%
Attack Vector ADJACENT_NETWORK
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-617
Status published
Products (7)
juniper/junos 21.4 (14 CPE variants)
juniper/junos 22.3 (10 CPE variants)
juniper/junos 22.4 (12 CPE variants)
juniper/junos 23.2 (4 CPE variants)
juniper/junos 23.4 (4 CPE variants)
juniper/junos < 21.4
juniper/junos_os_evolved 21.4 (5 CPE variants)
Published Jul 11, 2025
Tracked Since Feb 18, 2026