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Description

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.

PUBLISHED Reserved 2025-09-23 | Published 2025-10-09 | Updated 2025-10-09 | Assigner juniper




HIGH: 7.5CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

HIGH: 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/AU:Y/R:A/V:C/RE:M/U:Green

Problem types

CWE-908: Use of Uninitialized Resource

Product status

Default status
unaffected

24.4 before 24.4R1-S3, 24.4R2
affected

References

supportportal.juniper.net/JSA103153 vendor-advisory

www.juniper.net/...ent/sampling-edit-forwarding-options.html technical-description

cve.org (CVE-2025-59964)

nvd.nist.gov (CVE-2025-59964)

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