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.
References
| Link | Resource |
|---|---|
| https://supportportal.juniper.net/JSA100058 | Vendor Advisory |
| https://www.juniper.net/documentation/us/en/software/junos/network-mgmt/topics/topic-map/cfm-configuring.html | Product |
Configurations
Configuration 1 (hide)
| AND |
|
History
No history.
Information
Published : 2025-07-11 15:15
Updated : 2026-01-26 18:31
NVD link : CVE-2025-52952
Mitre link : CVE-2025-52952
CVE.ORG link : CVE-2025-52952
JSON object : View
Products Affected
juniper
- 32x10ge_mpc4e
- 2x100ge_\+_4x10ge_mpc5e
- mx2020
- mpc7e-10g
- mpc2e_q
- mx480
- mpc9e
- mpc7e-mrate
- mpc1e
- mpc2e_eq
- mx960
- 2x100ge_\+_8x10ge_mpc4e
- junos
- mpc1
- mpc2_q
- mpc2e_ng
- 6x40ge_\+_24x10ge_mpc5e
- mpc8e
- 6x40ge_\+_24x10ge_mpc5eq
- mpc2e
- mpc3e
- mpc1e_q
- mpc6e
- mx240
- mpc3e-3d-ng-q
- mx2010
- 2x100ge_\+_4x10ge_mpc5eq
- mpc2e_p
- mx2008
- mpc2_eq
- mpc1_q
- mpc2
- mpc3e-3d-ng
- mpc2e_ng_q
CWE
CWE-787
Out-of-bounds Write