CVE-2025-52952— 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
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I. Basic Information for CVE-2025-52952
Vulnerability Information
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Vulnerability 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
Source: NVD (National Vulnerability Database)
Vulnerability 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.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
跨界内存写
Source: NVD (National Vulnerability Database)
Vulnerability Title
Juniper Networks Junos OS 缓冲区错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Juniper Networks Junos OS是美国瞻博网络（Juniper Networks）公司的一套专用于该公司的硬件设备的网络操作系统。该操作系统提供了安全编程接口和Junos SDK。 Juniper Networks Junos OS存在缓冲区错误漏洞，该漏洞源于CFM守护进程存在越界写入，可能导致拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Juniper Networks | Junos OS | 0 ~ 22.2R3-S1 | - |
II. Public POCs for CVE-2025-52952
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|---|
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- Configure Connectivity Fault Management (CFM) | Junos OS | Juniper Networkstechnical-description
- https://nvd.nist.gov/vuln/detail/CVE-2025-52952
Same Patch Batch · Juniper Networks · 2025-07-11 · 24 CVEs total
| CVE-2025-52950 | 9.6 CRITICAL | Juniper Security Director: Insufficient authorization for multiple endpoints in web interf |
| CVE-2025-52954 | 7.8 HIGH | Junos OS Evolved: A low-privileged user can execute arbitrary Junos commands and modify th |
| CVE-2025-52946 | 7.5 HIGH | Junos OS and Junos OS Evolved: With traceoptions enabled, receipt of malformed AS PATH cau |
| CVE-2025-52981 | 7.5 HIGH | Junos OS: SRX Series: Sequence of specific PIM packets causes a flowd crash |
| CVE-2025-52980 | 7.5 HIGH | Junos OS: SRX300 Series: rpd will crash upon receiving a specific, valid BGP UPDATE messag |
| CVE-2025-30661 | 7.3 HIGH | Junos OS: Low-privileged user can cause script to run as root, leading to privilege escala |
| CVE-2025-52983 | 7.2 HIGH | Junos OS: After removing ssh public key authentication root can still log in |
| CVE-2025-52988 | 6.7 MEDIUM | Junos OS and Junos OS Evolved: Privilege escalation to root via CLI command 'request syste |
| CVE-2025-6549 | 6.5 MEDIUM | Junos OS: SRX Series: J-Web can be exposed on additional interfaces |
| CVE-2025-52947 | 6.5 MEDIUM | Junos OS: ACX Series: When 'hot-standby' mode is configured for an L2 circuit, interface f |
| CVE-2025-52949 | 6.5 MEDIUM | Junos OS and Junos OS Evolved: In an EVPN environment, receipt of specifically malformed B |
| CVE-2025-52955 | 6.5 MEDIUM | Junos OS and Junos OS Evolved: When jflow/sflow is configured continuous logical interface |
| CVE-2025-52953 | 6.5 MEDIUM | Junos OS and Junos OS Evolved: An unauthenticated adjacent attacker sending a valid BGP UP |
| CVE-2025-52964 | 6.5 MEDIUM | Junos OS and Junos OS Evolved: Receipt of a specific BGP UPDATE causes an rpd crash on dev |
| CVE-2025-52982 | 5.9 MEDIUM | Junos OS: MX Series: When specific SIP packets are processed the MS-MPC will crash |
| CVE-2025-52984 | 5.9 MEDIUM | Junos OS and Junos OS Evolved: When a static route points to a reject next-hop and a gNMI |
| CVE-2025-52948 | 5.9 MEDIUM | Junos OS: Specific unknown traffic pattern causes FPC and system to crash when packet capt |
| CVE-2025-52951 | 5.8 MEDIUM | Junos OS: IPv6 firewall filter fails to match payload-protocol |
| CVE-2025-52963 | 5.5 MEDIUM | Junos OS: A low-privileged user can disable an interface |
| CVE-2025-52986 | 5.5 MEDIUM | Junos OS and Junos OS Evolved: When RIB sharding is configured each time a show command is |
Showing top 20 of 24 CVEs. View all on vendor page → →
IV. Related Vulnerabilities
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Same vendor: Juniper Networks
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Junos OS: SRX Series: In a NAT64 configuration, receipt of a - CVE-2026-33787
Junos OS: SRX1500, SRX4100, SRX4200, SRX4600: When a specifi - CVE-2026-33785
Junos OS: MX Series: Missing Authorization for specific 'req - CVE-2026-33784
JSI Virtual Lightweight Collector: Default password is not r
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