Vulnerability Monitor

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CVE-2025-21600


An Out-of-Bounds Read vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, logically adjacent BGP peer sending a specifically malformed BGP packet to cause rpd to crash and restart, resulting in a Denial of Service (DoS). Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. This issue only affects systems configured in either of two ways: * systems with BGP traceoptions enabled * systems with BGP family traffic-engineering (BGP-LS) configured and can be exploited from a directly connected and configured BGP peer.  This issue affects iBGP and eBGP with any address family configured, and both IPv4 and IPv6 are affected by this vulnerability. This issue affects: Junos OS:  * from 21.4 before 21.4R3-S9,  * from 22.2 before 22.2R3-S5,  * from 22.3 before 22.3R3-S4,  * from 22.4 before 22.4R3-S5,  * from 23.2 before 23.2R2-S3,  * from 23.4 before 23.4R2-S3,  * from 24.2 before 24.2R1-S2, 24.2R2;  Junos OS Evolved:  * from 21.4-EVO before 21.4R3-S9-EVO,  * from 22.2-EVO before 22.2R3-S5-EVO,  * from 22.3-EVO before 22.3R3-S4-EVO,  * from 22.4-EVO before 22.4R3-S5-EVO,  * from 23.2-EVO before 23.2R2-S3-EVO,  * from 23.4-EVO before 23.4R2-S2-EVO,  * from 24.2-EVO before 24.2R1-S2-EVO, 24.2R2-EVO. This issue does not affect versions of Junos OS prior to 21.3R1. This issue does not affect versions of Junos OS Evolved prior to 21.3R1-EVO. This is a similar, but different vulnerability than the issue reported as CVE-2024-39516.


Security Impact Summary

This vulnerability carries a MEDIUM severity rating with a CVSS v3.1 score of 6.5, indicating it requires adjacent network access with relatively low complexity without requiring user interaction and does not require pre-existing privileges . The vulnerability impacts and availability (service disruption) for affected systems. Impacting 2 products from juniper, from juniper organizations running these solutions should prioritize assessment and patching.

Historical Context

Reported in 2025, this vulnerability emerged during an era marked by increased sophistication in supply chain attacks, cloud infrastructure vulnerabilities, and software-as-a-service (SaaS) security challenges. Security practices during this period emphasized zero-trust architectures, container security, and API protection.


Published

2025-01-09T17:15:18.960

Last Modified

2026-01-26T19:34:37.067

Status

Analyzed

Source

[email protected]

Severity

CVSSv3.1: 6.5 (MEDIUM)

Weaknesses
  • Type: Secondary
    CWE-125

Affected Vendors & Products
Type Vendor Product Version/Range Vulnerable?
Operating System juniper junos 21.4 Yes
Operating System juniper junos 21.4 Yes
Operating System juniper junos 21.4 Yes
Operating System juniper junos 21.4 Yes
Operating System juniper junos 21.4 Yes
Operating System juniper junos 21.4 Yes
Operating System juniper junos 21.4 Yes
Operating System juniper junos 21.4 Yes
Operating System juniper junos 21.4 Yes
Operating System juniper junos 21.4 Yes
Operating System juniper junos 21.4 Yes
Operating System juniper junos 21.4 Yes
Operating System juniper junos 21.4 Yes
Operating System juniper junos 21.4 Yes
Operating System juniper junos 21.4 Yes
Operating System juniper junos 21.4 Yes
Operating System juniper junos 22.2 Yes
Operating System juniper junos 22.2 Yes
Operating System juniper junos 22.2 Yes
Operating System juniper junos 22.2 Yes
Operating System juniper junos 22.2 Yes
Operating System juniper junos 22.2 Yes
Operating System juniper junos 22.2 Yes
Operating System juniper junos 22.2 Yes
Operating System juniper junos 22.2 Yes
Operating System juniper junos 22.2 Yes
Operating System juniper junos 22.2 Yes
Operating System juniper junos 22.2 Yes
Operating System juniper junos 22.3 Yes
Operating System juniper junos 22.3 Yes
Operating System juniper junos 22.3 Yes
Operating System juniper junos 22.3 Yes
Operating System juniper junos 22.3 Yes
Operating System juniper junos 22.3 Yes
Operating System juniper junos 22.3 Yes
Operating System juniper junos 22.3 Yes
Operating System juniper junos 22.3 Yes
Operating System juniper junos 22.3 Yes
Operating System juniper junos 22.3 Yes
Operating System juniper junos 22.4 Yes
Operating System juniper junos 22.4 Yes
Operating System juniper junos 22.4 Yes
Operating System juniper junos 22.4 Yes
Operating System juniper junos 22.4 Yes
Operating System juniper junos 22.4 Yes
Operating System juniper junos 22.4 Yes
Operating System juniper junos 22.4 Yes
Operating System juniper junos 22.4 Yes
Operating System juniper junos 22.4 Yes
Operating System juniper junos 22.4 Yes
Operating System juniper junos 22.4 Yes
Operating System juniper junos 23.2 Yes
Operating System juniper junos 23.2 Yes
Operating System juniper junos 23.2 Yes
Operating System juniper junos 23.2 Yes
Operating System juniper junos 23.2 Yes
Operating System juniper junos 23.2 Yes
Operating System juniper junos 23.2 Yes
Operating System juniper junos 23.4 Yes
Operating System juniper junos 23.4 Yes
Operating System juniper junos 23.4 Yes
Operating System juniper junos 23.4 Yes
Operating System juniper junos 23.4 Yes
Operating System juniper junos 23.4 Yes
Operating System juniper junos 23.4 Yes
Operating System juniper junos 24.2 Yes
Operating System juniper junos 24.2 Yes
Operating System juniper junos 24.2 Yes
Operating System juniper junos 24.2 Yes
Operating System juniper junos_os_evolved 21.4 Yes
Operating System juniper junos_os_evolved 21.4 Yes
Operating System juniper junos_os_evolved 21.4 Yes
Operating System juniper junos_os_evolved 21.4 Yes
Operating System juniper junos_os_evolved 21.4 Yes
Operating System juniper junos_os_evolved 21.4 Yes
Operating System juniper junos_os_evolved 21.4 Yes
Operating System juniper junos_os_evolved 21.4 Yes
Operating System juniper junos_os_evolved 21.4 Yes
Operating System juniper junos_os_evolved 21.4 Yes
Operating System juniper junos_os_evolved 21.4 Yes
Operating System juniper junos_os_evolved 21.4 Yes
Operating System juniper junos_os_evolved 21.4 Yes
Operating System juniper junos_os_evolved 21.4 Yes
Operating System juniper junos_os_evolved 21.4 Yes
Operating System juniper junos_os_evolved 21.4 Yes
Operating System juniper junos_os_evolved 22.2 Yes
Operating System juniper junos_os_evolved 22.2 Yes
Operating System juniper junos_os_evolved 22.2 Yes
Operating System juniper junos_os_evolved 22.2 Yes
Operating System juniper junos_os_evolved 22.2 Yes
Operating System juniper junos_os_evolved 22.2 Yes
Operating System juniper junos_os_evolved 22.2 Yes
Operating System juniper junos_os_evolved 22.2 Yes
Operating System juniper junos_os_evolved 22.2 Yes
Operating System juniper junos_os_evolved 22.2 Yes
Operating System juniper junos_os_evolved 22.2 Yes
Operating System juniper junos_os_evolved 22.2 Yes
Operating System juniper junos_os_evolved 22.3 Yes
Operating System juniper junos_os_evolved 22.3 Yes
Operating System juniper junos_os_evolved 22.3 Yes
Operating System juniper junos_os_evolved 22.3 Yes
Operating System juniper junos_os_evolved 22.3 Yes
Operating System juniper junos_os_evolved 22.3 Yes
Operating System juniper junos_os_evolved 22.3 Yes
Operating System juniper junos_os_evolved 22.3 Yes
Operating System juniper junos_os_evolved 22.3 Yes
Operating System juniper junos_os_evolved 22.3 Yes
Operating System juniper junos_os_evolved 22.3 Yes
Operating System juniper junos_os_evolved 22.4 Yes
Operating System juniper junos_os_evolved 22.4 Yes
Operating System juniper junos_os_evolved 22.4 Yes
Operating System juniper junos_os_evolved 22.4 Yes
Operating System juniper junos_os_evolved 22.4 Yes
Operating System juniper junos_os_evolved 22.4 Yes
Operating System juniper junos_os_evolved 22.4 Yes
Operating System juniper junos_os_evolved 22.4 Yes
Operating System juniper junos_os_evolved 22.4 Yes
Operating System juniper junos_os_evolved 22.4 Yes
Operating System juniper junos_os_evolved 22.4 Yes
Operating System juniper junos_os_evolved 22.4 Yes
Operating System juniper junos_os_evolved 23.2 Yes
Operating System juniper junos_os_evolved 23.2 Yes
Operating System juniper junos_os_evolved 23.2 Yes
Operating System juniper junos_os_evolved 23.2 Yes
Operating System juniper junos_os_evolved 23.2 Yes
Operating System juniper junos_os_evolved 23.2 Yes
Operating System juniper junos_os_evolved 23.2 Yes
Operating System juniper junos_os_evolved 23.4 Yes
Operating System juniper junos_os_evolved 23.4 Yes
Operating System juniper junos_os_evolved 23.4 Yes
Operating System juniper junos_os_evolved 23.4 Yes
Operating System juniper junos_os_evolved 23.4 Yes
Operating System juniper junos_os_evolved 23.4 Yes
Operating System juniper junos_os_evolved 24.2 Yes
Operating System juniper junos_os_evolved 24.2 Yes
Operating System juniper junos_os_evolved 24.2 Yes

References

How SecUtils Interprets This CVE

SecUtils normalizes and enriches National Vulnerability Database (NVD) records by standardizing vendor and product identifiers, aggregating vulnerability metadata from both NVD and MITRE sources, and providing structured context for security teams. For juniper's affected products, we extract Common Platform Enumeration (CPE) data, Common Weakness Enumeration (CWE) classifications, CVSS severity metrics, and reference data to enable rapid vulnerability prioritization and asset correlation. This record contains no exploit code, proof-of-concept instructions, or attack methodologies—only defensive intelligence necessary for patch management, risk assessment, and security operations.