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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| Juniper Networks | Junos OS | 24.4 – < 24.4R1-S3, 24.4R2 | 24.4R1-S3, 24.4R2 |
Advisories 2
- NCSC-2025-0305 Kwetsbaarheden verholpen in Juniper Networks Junos OS NCSC-NL (Netherlands) · Oct 13, 2025
- WID-SEC-2025-2238 Juniper JUNOS OS, Space, OS Evolved: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 9, 2025