Denial of Service Vulnerability in Juniper Networks Junos OS on SRX4700 Devices
CVE-2025-59964

8.7HIGH

Key Information:

Vendor

Juniper Networks
Status
Junos Os
Vendor
CVE Published:
9 October 2025

Badges

👾 Exploit Exists

What is CVE-2025-59964?

A vulnerability exists in the Packet Forwarding Engine (PFE) of Juniper Networks' Junos OS which can be exploited by an unauthenticated, network-based attacker. When the forwarding-options sampling feature is enabled, certain traffic directed to the Routing Engine (RE) can result in a crash and restart of the Flexible PIC Concentrator (FPC). This leads to a Denial of Service (DoS) condition, which can be prolonged by continuous reception of traffic targeting the RE. This issue affects both IPv4 and IPv6 traffic, impacting device availability significantly.

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Affected Version(s)

Junos OS SRX4700 24.4 < 24.4R1-S3, 24.4R2

References

https://supportportal.juniper.net/JSA103153
vendor-advisory
https://www.juniper.net/documentation/us/en/software/juno...
technical-description

CVSS V4

Score:
8.7
Severity:
HIGH
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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