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.
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Affected Vendors & Products
References
History
Sat, 12 Jul 2025 13:45:00 +0000
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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. | |
Title | Junos OS: MX Series with MPC-BUILTIN, MPC 1 through MPC 9: Receipt and processing of a malformed packet causes one or more FPCs to crash | |
Weaknesses | CWE-787 | |
References |
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Metrics |
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Status: PUBLISHED
Assigner: juniper
Published: 2025-07-11T15:04:35.691Z
Updated: 2025-07-11T20:10:52.673Z
Reserved: 2025-06-23T13:16:01.409Z
Link: CVE-2025-52952

Updated: 2025-07-11T20:10:48.637Z

Status : Awaiting Analysis
Published: 2025-07-11T15:15:25.930
Modified: 2025-07-15T13:14:49.980
Link: CVE-2025-52952

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