CVE-2025-59964: Junos OS: SRX4700: When forwarding-options sampling is enabled any traffic destined to the RE will cause the forwarding line card to crash and restart
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 Software
Remediation
Information
Event History
Frequently Asked Questions
What is the severity of CVE-2025-59964?
The severity of CVE-2025-59964 is considered high due to its ability to allow an unauthenticated attacker to cause a Denial of Service.
How do I fix CVE-2025-59964?
To fix CVE-2025-59964, update Junos OS on SRX4700 devices to a version that addresses this vulnerability.
Who is affected by CVE-2025-59964?
CVE-2025-59964 affects Juniper Networks Junos OS on SRX4700 devices specifically when forwarding-options sampling is enabled.
What kind of attack does CVE-2025-59964 enable?
CVE-2025-59964 enables network-based attackers to perform a Denial of Service attack.
Is authentication required to exploit CVE-2025-59964?
No, CVE-2025-59964 can be exploited by unauthenticated attackers.