CVE-2025-52952

CWE-787 — Out-of-bounds Write4 documents4 sources
Severity
7.1HIGH
EPSS
0.0%
top 87.57%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
2
Juniper Networks Junos OSJuniper Junos
Timeline
PublishedJul 11

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…

CVSS vector

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

Affected Packages2 packages

▶CVEListV5juniper_networks/junos_os22.4 — 22.4R2+1
▶NVDjuniper/junos< 22.2+2

🔴Vulnerability Details

2
CVEList
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↗2025-07-11
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GHSA
GHSA-pwqr-fp7x-9xcp: An Out-of-bounds Write vulnerability in the connectivity fault management (CFM) daemon of Juniper Networks Junos OS on MX Series with MPC-BUILTIN, MPC↗2025-07-11
▶

📋Vendor Advisories

1
Juniper
CVE-2025-52952: An Out-of-bounds Write vulnerability in the connectivity fault management (CFM) daemon of Juniper Networks Junos OS on MX Series with MPC-BUILTIN, MPC↗2025-07-11
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CVE-2025-52952 (HIGH CVSS 7.1) | An Out-of-bounds Write vulnerabilit | cvebase.io