CVE-2025-30650 PUBLISHED

Junos OS: Privileged local user can gain access to a Linux-based FPC as root

Assigner: juniper
Reserved: 24.03.2025 Published: 08.04.2026 Updated: 08.04.2026

A Missing Authentication for Critical Function vulnerability in command processing of Juniper Networks Junos OS allows a privileged local attacker to gain access to line cards running Junos OS Evolved

as root.

This issue affects systems running Junos OS using Linux-based line cards. Affected line cards include: * MPC7, MPC8, MPC9, MPC10, MPC11 * LC2101, LC2103 * LC480, LC4800, LC9600 * MX304 (built-in FPC) * MX-SPC3 * SRX5K-SPC3 * EX9200-40XS

FPC3-PTX-U2, FPC3-PTX-U3
FPC3-SFF-PTX
LC1101, LC1102, LC1104, LC1105

This issue affects Junos OS:

all versions before 22.4R3-S8,
from 23.2 before 23.2R2-S6,
from 23.4 before 23.4R2-S6,
from 24.2 before 24.2R2-S3,
from 24.4 before 24.4R2,
from 25.2 before 25.2R2.

CVSS Vector: CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS Score: 6.7

Attack Vector	Local	Scope	Unchanged
Attack Complexity	Low	Confidentiality Impact	High
Privileges Required	High	Integrity Impact	High
User Interaction	None	Availability Impact	High

CVSS 3.1

CVSS Vector: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:L/SI:L/SA:L/AU:N/R:A/V:C/RE:M/U:Amber
CVSS Score: 8.4

Exploitability Metrics		Vulnerable System Impact Metrics		Subsequent System Impact Metrics
Attack Vector	Local	Confidentiality	High	Confidentiality	Low
Attack Complexity	Low	Integrity	High	Integrity	Low
Attack Requirements	None	Availability	High	Availability	Low
Privileges Required	High
User Interaction	None

CVSS 4.0

Product Status

Vendor	Juniper Networks
Product	Junos OS
Versions	Default: unaffected affected from all versions to 22.4R3-S8 (excl.) affected from 23.2 to 23.2R2-S6 (excl.) affected from 23.4 to 23.4R2-S6 (excl.) affected from 24.2 to 24.2R2-S3 (excl.) affected from 24.4 to 24.4R2 (excl.) affected from 25.2 to 25.2R2 (excl.)

Exploits

Juniper SIRT is not aware of any malicious exploitation of this vulnerability.

Workarounds

There are no known workarounds for this issue.

Solutions

The following software releases have been updated to resolve this specific issue: 22.4R3-S8, 23.2R2-S6, 23.4R2-S6, 24.2R2-S3, 24.4R2, 25.2R2, 25.4R1, and all subsequent releases.

Credits

Juniper SIRT would like to acknowledge and thank Pierre EMERIAUD & Orange CERT-CC from Orange group for responsibly reporting this vulnerability. finder

References

Problem Types

CWE-306 Missing Authentication for Critical Function CWE