CVE-2025-52952
HIGH EPSS 19.2%
Published Jul 11, 202511mo ago · Modified Jun 17, 20262w ago
7.1 CVSS 4.0
Published Jul 11, 2025 11mo ago
Last Modified Jun 17, 2026 2w ago
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.
CVSS Details
Base Score
Exploitability
Impact
Vector string
CVSS:4.0/AV:A/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:Y/R:A/V:C/RE:M/U:Green Attack Vector Adjacent
Attack Complexity Low
Privileges Required None
User Interaction None
Scope X
Threat Intelligence
EPSS Exploit Probability
19.2% percentile
Exploit & Patch Status
No Known Exploit
No Patch Available
Weaknesses 1
CWE-787 Out-of-bounds Write Memory Safety
Affected Products 46
| Vendor | Product | Version | Range |
|---|---|---|---|
| juniper | junos | * | <22.2 |
| juniper | junos | 22.2 | any |
| juniper | junos | 22.2 | any |
| juniper | junos | 22.2 | any |
| juniper | junos | 22.2 | any |
| juniper | junos | 22.2 | any |
| juniper | junos | 22.2 | any |
| juniper | junos | 22.2 | any |
| juniper | junos | 22.2 | any |
| juniper | junos | 22.4 | any |
| juniper | junos | 22.4 | any |
| juniper | junos | 22.4 | any |
| juniper | junos | 22.4 | any |
| juniper | 2x100ge_\+_4x10ge_mpc5e | * | any |
| juniper | 2x100ge_\+_4x10ge_mpc5eq | * | any |
| juniper | 2x100ge_\+_8x10ge_mpc4e | * | any |
| juniper | 32x10ge_mpc4e | * | any |
| juniper | 6x40ge_\+_24x10ge_mpc5e | * | any |
| juniper | 6x40ge_\+_24x10ge_mpc5eq | * | any |
| juniper | mpc1 | * | any |
| juniper | mpc1_q | * | any |
| juniper | mpc1e | * | any |
| juniper | mpc1e_q | * | any |
| juniper | mpc2 | * | any |
| juniper | mpc2_eq | * | any |
| juniper | mpc2_q | * | any |
| juniper | mpc2e | * | any |
| juniper | mpc2e_eq | * | any |
| juniper | mpc2e_ng | * | any |
| juniper | mpc2e_ng_q | * | any |
| juniper | mpc2e_p | * | any |
| juniper | mpc2e_q | * | any |
| juniper | mpc3e | * | any |
| juniper | mpc3e-3d-ng | * | any |
| juniper | mpc3e-3d-ng-q | * | any |
| juniper | mpc6e | * | any |
| juniper | mpc7e-10g | * | any |
| juniper | mpc7e-mrate | * | any |
| juniper | mpc8e | * | any |
| juniper | mpc9e | * | any |
| juniper | mx2008 | * | any |
| juniper | mx2010 | * | any |
| juniper | mx2020 | * | any |
| juniper | mx240 | * | any |
| juniper | mx480 | * | any |
| juniper | mx960 | * | any |
References 2
- supportportal.juniper.net https://supportportal.juniper.net/JSA100058
- juniper.net https://www.juniper.net/documentation/us/en/software/junos/network-mgmt/topics/topic-map/cfm-configuring.html
Remediation
No remediation data recorded yet
Check vendor advisories and the NVD entry for patch availability.