CVE-2025-30655 Information

Description

An Improper Check for Unusual or Exceptional Conditions vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows a local low-privileged attacker to cause a Denial-of-Service (DoS).

When a specific \show bgp neighbor\ CLI command is run the rpd cpu utilization rises and eventually causes a crash and restart. Repeated use of this command will cause a sustained DoS condition. 

The device is only affected if BGP RIB sharding and update-threading is enabled. This issue affects Junos OS: 

All versions before 21.2R3-S9 
from 21.4 before 21.4R3-S8
from 22.2 before 22.2R3-S6 
from 22.4 before 22.4R3-S2 
from 23.2 before 23.2R2-S3 
from 23.4 before 23.4R2.

and Junos OS Evolved: 

All versions before 21.2R3-S9-EVO 
from 21.4-EVO before 21.4R3-S8-EVO 
from 22.2-EVO before 22.2R3-S6-EVO 
from 22.4-EVO before 22.4R3-S2-EVO 
from 23.2-EVO before 23.2R2-S3-EVO 
from 23.4-EVO before 23.4R2-EVO.

CVSS Vector

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

Reference

https://supportportal.juniper.net/JSA96465

Attack Complexity

LOW

Privileges Required

LOW

User Interaction Required

LOW

Scope

NONE

Confidentiality Impact

UNCHANGED

Integrity Impact

NONE

Availability Impact

NONE

Base Score

HIGH

Base Severity

5.5