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CVE-2025-52955— Junos OS and Junos OS Evolved: When jflow/sflow is configured continuous logical interface flaps causes rpd crash and restart

CVSS 6.5 · Medium EPSS 0.09% · P25
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I. Basic Information for CVE-2025-52955

Vulnerability Information
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Vulnerability Title
Junos OS and Junos OS Evolved: When jflow/sflow is configured continuous logical interface flaps causes rpd crash and restart
Source: NVD (National Vulnerability Database)
Vulnerability Description
An Incorrect Calculation of Buffer Size vulnerability in the routing protocol daemon (rpd) of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent unauthenticated attacker to cause a memory corruption that leads to a rpd crash.  When the logical interface using a routing instance flaps continuously, specific updates are sent to the jflow/sflow modules. This results in memory corruption, leading to an rpd crash and restart.  Continued receipt of these specific updates will cause a sustained Denial of Service condition. This issue affects Junos OS: * All versions before 21.2R3-S9, * All versions of 21.4, * All versions of 22.2, * from 22.4 before 22.4R3-S7, * from 23.2 before 23.2R2-S3, * from 23.4 before 23.4R2-S4, * from 24.2 before 24.2R2. Junos OS Evolved:  * All versions of 21.2-EVO,  * All versions of 21.4-EVO,  * All versions of 22.2-EVO,  * from 22.4 before 22.4R3-S7-EVO,  * from 23.2 before 23.2R2-S3-EVO,  * from 23.4 before 23.4R2-S4-EVO,  * from 24.2 before 24.2R2-EVO.
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
缓冲区大小计算不正确
Source: NVD (National Vulnerability Database)
Vulnerability Title
Juniper Networks Junos OS 安全漏洞
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存在安全漏洞，该漏洞源于rpd缓冲区大小计算错误，可能导致内存损坏。
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

VendorProductAffected VersionsCPESubscribe
Juniper NetworksJunos OS 0 ~ 21.2R3-S9 -
Juniper NetworksJunos OS Evolved 0 ~ 21.2*-EVO -

II. Public POCs for CVE-2025-52955

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III. Intelligence Information for CVE-2025-52955

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Same Patch Batch · Juniper Networks · 2025-07-11 · 24 CVEs total

CVE-2025-529509.6 CRITICALJuniper Security Director: Insufficient authorization for multiple endpoints in web interf
CVE-2025-529547.8 HIGHJunos OS Evolved: A low-privileged user can execute arbitrary Junos commands and modify th
CVE-2025-529467.5 HIGHJunos OS and Junos OS Evolved: With traceoptions enabled, receipt of malformed AS PATH cau
CVE-2025-529817.5 HIGHJunos OS: SRX Series: Sequence of specific PIM packets causes a flowd crash
CVE-2025-529807.5 HIGHJunos OS: SRX300 Series: rpd will crash upon receiving a specific, valid BGP UPDATE messag
CVE-2025-306617.3 HIGHJunos OS: Low-privileged user can cause script to run as root, leading to privilege escala
CVE-2025-529837.2 HIGHJunos OS: After removing ssh public key authentication root can still log in
CVE-2025-529886.7 MEDIUMJunos OS and Junos OS Evolved: Privilege escalation to root via CLI command 'request syste
CVE-2025-65496.5 MEDIUMJunos OS: SRX Series: J-Web can be exposed on additional interfaces
CVE-2025-529476.5 MEDIUMJunos OS: ACX Series: When 'hot-standby' mode is configured for an L2 circuit, interface f
CVE-2025-529496.5 MEDIUMJunos OS and Junos OS Evolved: In an EVPN environment, receipt of specifically malformed B
CVE-2025-529526.5 MEDIUMJunos OS: MX Series with MPC-BUILTIN, MPC 1 through MPC 9: Receipt and processing of a mal
CVE-2025-529536.5 MEDIUMJunos OS and Junos OS Evolved: An unauthenticated adjacent attacker sending a valid BGP UP
CVE-2025-529646.5 MEDIUMJunos OS and Junos OS Evolved: Receipt of a specific BGP UPDATE causes an rpd crash on dev
CVE-2025-529825.9 MEDIUMJunos OS: MX Series: When specific SIP packets are processed the MS-MPC will crash
CVE-2025-529845.9 MEDIUMJunos OS and Junos OS Evolved: When a static route points to a reject next-hop and a gNMI
CVE-2025-529485.9 MEDIUMJunos OS: Specific unknown traffic pattern causes FPC and system to crash when packet capt
CVE-2025-529515.8 MEDIUMJunos OS: IPv6 firewall filter fails to match payload-protocol
CVE-2025-529635.5 MEDIUMJunos OS: A low-privileged user can disable an interface
CVE-2025-529865.5 MEDIUMJunos 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

Same product: Junos OS
Same vendor: Juniper Networks
Same weakness: CWE-131

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