CVE-2025-30655: Junos OS and Junos OS Evolved: A specific CLI command will cause an RPD crash when rib-sharding and update-threading is enabled
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.
Affected Software
Remediation
Information
Event History
Frequently Asked Questions
What is the severity of CVE-2025-30655?
CVE-2025-30655 has a high severity rating as it allows local low-privileged attackers to cause a Denial-of-Service.
How do I fix CVE-2025-30655?
To mitigate CVE-2025-30655, upgrade your Junos OS or Junos OS Evolved to version 21.2R3-S10 or later.
Who is affected by CVE-2025-30655?
CVE-2025-30655 affects users running Junos OS versions up to 21.2R3-S9 and Junos OS Evolved versions up to 21.2R3-S9-EVO.
What is the impact of CVE-2025-30655?
The impact of CVE-2025-30655 is a potential Denial-of-Service condition caused by executing a specific CLI command.
Is there a workaround for CVE-2025-30655?
Currently, there are no workarounds for CVE-2025-30655; the best action is to upgrade to the fixed versions.