Improper Handling of Length Parameter in Juniper Networks Junos OS on SRX Series
CVE-2025-30659

8.7HIGH

Key Information:

Vendor

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

Badges

👾 Exploit Exists

What is CVE-2025-30659?

A vulnerability in Juniper Networks' Junos OS allows unauthenticated network-based attackers to exploit improper handling of length parameters in the Packet Forwarding Engine (PFE). This can lead to a Denial-of-Service (DoS) condition when a device reacts to a specifically malformed packet while configured for Secure Vector Routing (SVR). The PFE may crash and subsequently restart, impacting system availability.

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Affected Version(s)

Junos OS SRX Series 21.4R1 < 21.4*

Junos OS SRX Series 22.2 < 22.2R3-S6

Junos OS SRX Series 22.4 < 22.4R3-S6

References

https://supportportal.juniper.net/JSA96470
vendor-advisory

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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