Description

An Out-of-bounds Write vulnerability in the connectivity fault management (CFM) daemon of Juniper Networks Junos OS on MX Series with MPC-BUILTIN, MPC1 through MPC9 line cards allows an unauthenticated adjacent attacker to send a malformed packet to the device, leading to an FPC crash and restart, resulting in a Denial of Service (DoS). Continued receipt and processing of this packet will create a sustained Denial of Service (DoS) condition. This issue affects Juniper Networks: Junos OS: * All versions before 22.2R3-S1, * from 22.4 before 22.4R2. This feature is not enabled by default.

INFO

Published Date :

2025-07-11T15:04:35.691Z

Last Modified :

2025-07-11T20:10:52.673Z

Source :

juniper
AFFECTED PRODUCTS

The following products are affected by CVE-2025-52952 vulnerability.

Vendors Products
Juniper
  • 2x100ge \+ 4x10ge Mpc5e
  • 2x100ge \+ 4x10ge Mpc5eq
  • 2x100ge \+ 8x10ge Mpc4e
  • 32x10ge Mpc4e
  • 6x40ge \+ 24x10ge Mpc5e
  • 6x40ge \+ 24x10ge Mpc5eq
  • Junos
  • Mpc1
  • Mpc1 Q
  • Mpc1e
  • Mpc1e Q
  • Mpc2
  • Mpc2 Eq
  • Mpc2 Q
  • Mpc2e
  • Mpc2e Eq
  • Mpc2e Ng
  • Mpc2e Ng Q
  • Mpc2e P
  • Mpc2e Q
  • Mpc3e
  • Mpc3e-3d-ng
  • Mpc3e-3d-ng-q
  • Mpc6e
  • Mpc7e-10g
  • Mpc7e-mrate
  • Mpc8e
  • Mpc9e
  • Mx2008
  • Mx2010
  • Mx2020
  • Mx240
  • Mx480
  • Mx960
Juniper Networks
  • Junos Os
REFERENCES

Here, you will find a curated list of external links that provide in-depth information to CVE-2025-52952.

URL Resource
https://supportportal.juniper.net/JSA100058 cve-icon cve-icon
https://www.juniper.net/documentation/us/en/software/junos/network-mgmt/topics/topic-map/cfm-configuring.html cve-icon cve-icon
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CVSS Vulnerability Scoring System

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Detailed values of each vector for above chart.
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality Impact
Integrity Impact
Availability Impact