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.

Classification

CVE ID: CVE-2025-30655

CVSS Base Severity: MEDIUM

CVSS Base Score: 5.5

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

Affected Products

Vendor: Juniper Networks, Juniper Networks

Product: Junos OS, Junos OS Evolved

Exploit Prediction Scoring System (EPSS)

EPSS Score: 0.01% (probability of being exploited)

EPSS Percentile: 1.74% (scored less or equal to compared to others)

EPSS Date: 2025-04-21 (when was this score calculated)

References

https://nvd.nist.gov/vuln/detail/CVE-2025-30655
https://supportportal.juniper.net/JSA96465

Timeline