CVE-2025-59964

published 2025-10-09

CVE-2025-59964: A Use of Uninitialized Resource vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on SRX4700 devices allows an unauthenticated…

high 8.7 CVSS 4.0

AV N AC L AT N PR N UI N VC N VI N VA H SC N SI N SA L E X CR X IR X AR X MAV X MAC X MAT X MPR X MUI X MVC X MVI X MVA X MSC X MSI X MSA X S X AU Y R A V C RE M U Green

A Use of Uninitialized Resource vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on SRX4700 devices allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS).

When forwarding-options sampling is enabled, receipt of any traffic destined to the Routing Engine (RE) by the PFE line card leads to an FPC crash and restart, resulting in a Denial of Service (DoS).

Continued receipt and processing of any traffic leading to the RE by the PFE line card will create a sustained Denial of Service (DoS) condition to the PFE line card.

This issue affects Junos OS on SRX4700:

* from 24.4 before 24.4R1-S3, 24.4R2

This issue affects IPv4 and IPv6.

Affected

4 ranges

Vendor	Product	Version range	Fixed in
juniper	junos	—	—
juniper	junos_os	—	—
juniper	srx_series	—	—
juniper_networks	junos_os	>= 24.4 < 24.4R1-S3, 24.4R2	24.4R1-S3, 24.4R2

CWE-908