CVE-2025-30659

Junos OS: SRX Series: A device configured for vector routing crashes when receiving malformed traffic

Description

An Improper Handling of Length Parameter Inconsistency vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on SRX Series allows an unauthenticated, network-based attacker to cause a Denial-of-Service (DoS). When a device configured for Secure Vector Routing (SVR) receives a specifically malformed packet the PFE will crash and restart. This issue affects Junos OS on SRX Series: * All 21.4 versions, * 22.2 versions before 22.2R3-S6, * 22.4 versions before 22.4R3-S6, * 23.2 versions before 23.2R2-S3, * 23.4 versions before 23.4R2-S4, * 24.2 versions before 24.2R2. This issue does not affect versions before 21.4.

Remediation

Solution:

  • The following software releases have been updated to resolve this specific issue: 22.2R3-S6, 22.4R3-S6, 23.2R2-S3, 23.4R2-S4, 24.2R2, 24.4R1, and all subsequent releases.

Workaround:

  • There are no known workarounds for this issue.

Category

8.7
CVSS
Severity: High
CVSS 4.0 •
CVSS 3.1 •
EPSS 0.06%
Vendor Advisory juniper.net
Affected: Juniper Networks Junos OS
Published at:
Updated at:

References

Link Tags
https://supportportal.juniper.net/JSA96470 vendor advisory

Frequently Asked Questions

What is the severity of CVE-2025-30659?
CVE-2025-30659 has been scored as a high severity vulnerability.
How to fix CVE-2025-30659?
To fix CVE-2025-30659: The following software releases have been updated to resolve this specific issue: 22.2R3-S6, 22.4R3-S6, 23.2R2-S3, 23.4R2-S4, 24.2R2, 24.4R1, and all subsequent releases.
Is CVE-2025-30659 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-30659 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-30659?
CVE-2025-30659 affects Juniper Networks Junos OS.
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