Improper Condition Check in Juniper Networks Junos OS Causes DoS Vulnerability
CVE-2025-30655

6.8MEDIUM

Key Information:

Vendor

Juniper Networks
Status
Junos Os
Junos Os Evolved
Vendor
CVE Published:
9 April 2025

Badges

👾 Exploit Exists

What is CVE-2025-30655?

A vulnerability exists in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved, which allows local attackers with low privileges to exploit a command, specifically 'show bgp neighbor'. When executed, this command increases CPU utilization in rpd, leading to device crashes and restarts. Continued use of the command can result in a sustained Denial-of-Service (DoS) scenario. To be impacted, the device must have BGP RIB sharding and update-threading enabled.

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Affected Version(s)

Junos OS 0 < 21.2R3-S9

Junos OS 21.4 < 21.4R3-S8

Junos OS 22.2 < 22.2R3-S6

References

https://supportportal.juniper.net/JSA96465
vendor-advisory

CVSS V4

Score:
6.8
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
High
Attack Vector:
Local
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
None

Timeline

  • 👾

    Exploit known to exist

  • Vulnerability published

  • Vulnerability Reserved

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