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
First published: Wed Apr 09 2025(Updated: )
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.
Credit: sirt@juniper.net
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Juniper JUNOS | <21.2R3-S9>=undefined>=undefined>=undefined>=undefined>=undefined | |
| Juniper Networks Junos OS | <21.2R3-S9-EVO>=undefined>=undefined>=undefined>=undefined>=undefined |
Remedy
The following software releases have been updated to resolve this specific issue: Junos OS Evolved: 21.2R3-S9-EVO, 21.4R3-S8-EVO, 22.2R3-S6-EVO, 22.4R3-S2-EVO, 23.2R2-S3-EVO, 23.4R2-EVO, 24.2R1-EVO. Junos OS: 21.2R3-S9, 21.4R3-S8, 22.2R3-S6, 22.4R3-S2, 23.2R2-S3, 23.4R2, 24.2R1, and all subsequent releases.
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Reference Links
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.
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