CVE-2026-21919 Junos OS and Junos OS Evolved: A high frequency of connecting and disconnecting NETCONF sessions causes management unavailability

An Incorrect Synchronization vulnerability in the management daemon mgd of Juniper Networks Junos OS and Junos OS Evolved allows a network-based attacker with low privileges to cause a complete Denial-of-Service DoS of the management plane. When NETCONF sessions are quickly established and...

CVE-2026-21919 Junos OS and Junos OS Evolved: A high frequency of connecting and disconnecting NETCONF sessions causes management unavailability

An Incorrect Synchronization vulnerability in the management daemon mgd of Juniper Networks Junos OS and Junos OS Evolved allows a network-based attacker with low privileges to cause a complete Denial-of-Service DoS of the management plane. When NETCONF sessions are quickly established and...

CVE-2026-21919

Summary: CVE-2026-21919 describes an Incorrect Synchronization vulnerability in Juniper mgd (management daemon) on Junos OS and Junos OS Evolved. When NETCONF sessions are rapidly opened and closed, a locking issue can cause mgd processes to hang in a lockf state, eventually hitting the maximum p...

CVE-2025-59969

A Buffer Copy without Checking Size of Input 'Classic Buffer Overflow' vulnerability in the advanced forwarding toolkit evo-aftmand/evo-pfemand of Juniper Networks Junos OS Evolved on PTX Series or QFX5000 Series allows an unauthenticated, adjacent attacker to cause a Denial of Service DoS.An...

CVE-2025-59969

CVE-2025-59969 affects Junos OS Evolved on PTX Series and QFX5000 Series. The vulnerability is a buffer copy without size checking in the advanced forwarding toolkit components evo-aftmand and evo-pfemand, leading to a Denial of Service when an attacker—positioned adjacent—sends crafted multicast...

CVE-2025-59969 Junos OS Evolved: QFX5000 Series and PTX Series: An attacker sending crafted multicast packets will cause evo-aftmand / evo-pfemand to crash and restart

A Buffer Copy without Checking Size of Input 'Classic Buffer Overflow' vulnerability in the advanced forwarding toolkit evo-aftmand/evo-pfemand of Juniper Networks Junos OS Evolved on PTX Series or QFX5000 Series allows an unauthenticated, adjacent attacker to cause a Denial of Service DoS.An...

CVE-2025-59969 Junos OS Evolved: QFX5000 Series and PTX Series: An attacker sending crafted multicast packets will cause evo-aftmand / evo-pfemand to crash and restart

A Buffer Copy without Checking Size of Input 'Classic Buffer Overflow' vulnerability in the advanced forwarding toolkit evo-aftmand/evo-pfemand of Juniper Networks Junos OS Evolved on PTX Series or QFX5000 Series allows an unauthenticated, adjacent attacker to cause a Denial of Service DoS.An...

CVE-2026-33793

An Execution with Unnecessary Privileges vulnerability in the User Interface UI of Juniper Networks Junos OS and Junos OS Evolved allows a local, low-privileged attacker to gain root privileges, thus compromising the system. When a configuration that allows unsigned Python op scripts is present o...

CVE-2026-33793 Junos OS and Junos OS Evolved: When an unsigned Python op script configuration is present, a local low privileged user can compromise the system

An Execution with Unnecessary Privileges vulnerability in the User Interface UI of Juniper Networks Junos OS and Junos OS Evolved allows a local, low-privileged attacker to gain root privileges, thus compromising the system. When a configuration that allows unsigned Python op scripts is present o...

CVE-2026-33793

CVE-2026-33793 describes an Execution with Unnecessary Privileges in the Junos OS/Junos OS Evolved UI. If a device has a configuration that allows unsigned Python op scripts, a non-root user can run malicious op scripts and escalate to root-equivalent privileges, compromising the system. Affected...

CVE-2026-33793 Junos OS and Junos OS Evolved: When an unsigned Python op script configuration is present, a local low privileged user can compromise the system

An Execution with Unnecessary Privileges vulnerability in the User Interface UI of Juniper Networks Junos OS and Junos OS Evolved allows a local, low-privileged attacker to gain root privileges, thus compromising the system. When a configuration that allows unsigned Python op scripts is present o...

PT-2026-31802

Name of the Vulnerable Software and Affected Versions Juniper Networks Junos OS Evolved on PTX Series versions prior to 22.4R3-S9-EVO Juniper Networks Junos OS Evolved on PTX Series versions prior to 23.2R2-S6-EVO Juniper Networks Junos OS Evolved on PTX Series versions prior to 23.4R2-S7-EVO...

Juniper Networks Junos OS和Juniper Networks Junos OS Evolved 安全漏洞

Juniper Networks Junos OS and Juniper Networks Junos OS Evolved are both products of Juniper Networks, a US-based company. Juniper Networks Junos OS is a network operating system specifically designed for the company’s hardware devices. This operating system provides secure programming interfaces...

Juniper Networks Junos OS和Juniper Networks Junos OS Evolved 输入验证错误漏洞

Juniper Networks Junos OS and Juniper Networks Junos OS Evolved are both products of Juniper Networks, a US-based company. Juniper Networks Junos OS is a network operating system specifically designed for the company’s hardware devices. This operating system provides secure programming interfaces...

Juniper Networks Junos OS Evolved 安全漏洞

Juniper Networks Junos OS Evolved is an upgraded version of Junos OS from Juniper Networks. There are security vulnerabilities in Junos OS Evolved, which stem from buffer overflow attacks and may lead to denial-of-service attacks. The following products and versions are affected: PTX Series...

Juniper Networks Junos OS和Juniper Networks Junos OS Evolved 安全漏洞

Juniper Networks Junos OS and Juniper Networks Junos OS Evolved are both products of Juniper Networks, a US-based company. Juniper Networks Junos OS is a network operating system specifically designed for the company’s hardware devices. This operating system provides secure programming interfaces...

Juniper Networks Junos OS和Juniper Networks Junos OS Evolved 操作系统命令注入漏洞

Juniper Networks Junos OS and Juniper Networks Junos OS Evolved are both products of Juniper Networks, a US-based company. Juniper Networks Junos OS is a network operating system specifically designed for the company’s hardware devices. This operating system provides secure programming interfaces...

PT-2026-31742

A Buffer Copy without Checking Size of Input 'Classic Buffer Overflow' vulnerability in the advanced forwarding toolkit evo-aftmand/evo-pfemand of Juniper Networks Junos OS Evolved on PTX Series or QFX5000 Series allows an unauthenticated, adjacent attacker to cause a Denial of Service DoS.An...

Juniper Networks Junos OS Evolved 安全漏洞

Juniper Networks Junos OS Evolved is an upgraded version of Junos OS from Juniper Networks. Vulnerabilities existed in versions prior to Junos OS Evolved on the PTX Series 22.4R3-S9-EVO, 23.2R2-S6-EVO, 23.4R2-S7-EVO, 24.2R2-S4-EVO, 24.4R2-S2-EVO, and versions like 25.2R1-S2-EVO and 25.2R2-EVO...

PT-2026-31750

A Missing Release of Memory after Effective Lifetime vulnerability in the Layer 2 Address Learning Daemon l2ald of Juniper Networks Junos OS and Junos OS Evolved allows an adjacent, unauthenticated attacker to cause a memory leak ultimately leading to a Denial of Service DoS. In an EVPN-MPLS...