CVE-2025-52964: Junos OS and Junos OS Evolved: Receipt of a specific BGP UPDATE causes an rpd crash on devices with BGP multipath configured
A Reachable Assertion vulnerability in the Routing Protocol Daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an unauthenticated, network-based attacker to cause a Denial of Service (DoS).
When the device receives a specific BGP UPDATE packet, the rpd crashes and restarts. Continuous receipt of this specific packet will cause a sustained DoS condition.
For the issue to occur, BGP multipath with "pause-computation-during-churn" must be configured on the device, and the attacker must send the paths via a BGP UPDATE from a established BGP peer.
This issue affects: Junos OS: All versions before 21.4R3-S7, from 22.3 before 22.3R3-S3, from 22.4 before 22.4R3-S5, from 23.2 before 23.2R2, from 23.4 before 23.4R2.
Junos OS Evolved: All versions before 21.4R3-S7-EVO, from 22.3 before 22.3R3-S3-EVO, from 22.4 before 22.4R3-S5-EVO, from 23.2 before 23.2R2-EVO, from 23.4 before 23.4R2-EVO.
Affected Software
Remediation
Information
Event History
Frequently Asked Questions
What are the implications of CVE-2025-52964?
CVE-2025-52964 allows unauthenticated attackers to cause a Denial of Service on affected Junos OS devices.
Which versions of Junos OS are affected by CVE-2025-52964?
CVE-2025-52964 affects Juniper Networks Junos OS versions up to 21.4R3-S7 and Junos OS Evolved versions up to 21.4R3-S7-EVO.
How do I mitigate the risks of CVE-2025-52964?
To mitigate CVE-2025-52964, it is recommended to upgrade to a patched version of Junos OS or Junos OS Evolved.
Is CVE-2025-52964 remotely exploitable?
Yes, CVE-2025-52964 is remotely exploitable by an unauthenticated, network-based attacker.
What type of attack does CVE-2025-52964 enable?
CVE-2025-52964 enables a Denial of Service attack against the Routing Protocol Daemon in Junos OS.