CVE-2025-30656 Information

Description

An Improper Handling of Additional Special Element vulnerability in the Packet Forwarding Engine (PFE) of Juniper Networks Junos OS on MX Series with MS-MPC MS-MIC and SPC3 and SRX Series allows an unauthenticated network-based attacker to cause a Denial-of-Service (DoS).

If the SIP ALG processes specifically formatted SIP invites a memory corruption will occur which will lead to a crash of the FPC processing these packets. Although the system will automatically recover with the restart of the FPC subsequent SIP invites will cause the crash again and lead to a sustained DoS.

This issue affects Junos OS on MX Series and SRX Series: 

all versions before 21.2R3-S9
21.4 versions before 21.4R3-S10
22.2 versions before 22.2R3-S6
22.4 versions before 22.4R3-S5
23.2 versions before 23.2R2-S3
23.4 versions before 23.4R2-S3
24.2 versions before 24.2R1-S2 24.2R2.

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Reference

https://supportportal.juniper.net/JSA96466

Attack Complexity

LOW

Privileges Required

NONE

User Interaction Required

NONE

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

7.5