CVE-2025-59964

EUVD-2025-33397
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.
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
juniperCNA
7.5 HIGH
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Base Score
CVSS 3.x
EPSS Score
Percentile: 34%
Affected Products (NVD)
VendorProductVersion
juniperjunos
24.4
juniperjunos
24.4:r1
juniperjunos
24.4:r1-s2
juniperjunos
24.4:r2
𝑥
= Vulnerable software versions
Common Weakness Enumeration
References
https://supportportal.juniper.net/JSA103153
https://www.juniper.net/documentation/us/en/software/junos/cli-reference/topics/ref/statement/sampling-edit-forwarding-options.html