Memory Management Vulnerability in Junos OS on MX Series by Juniper Networks

CVE-2025-30647

What is CVE-2025-30647?

A memory leak vulnerability exists within the packet forwarding engine of Juniper Networks Junos OS on MX Series, enabling unauthenticated adjacent attackers to execute a Denial-of-Service attack. This issue arises during subscriber management operations, where login/logout activities trigger a continuous memory leak. As leaked memory accumulates, it eventually depletes system resources, leading to a potential crash of the device. It is crucial for organizations using affected versions to review their systems and apply the necessary patches to mitigate risks.

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