Vulnerability fixed in Juniper Networks Junos OS Evolved

Juniper has fixed a vulnerability in Junos OS Evolved running on PTX Series devices. A malicious party can exploit this vulnerability to increase privileges. The vulnerability is in the Flexible PIC Concentrators FPCs of Juniper Networks Junos OS Evolved on PTX systems. The vulnerability can lead...

CVE-2026-21910

An Improper Check for Unusual or Exceptional Conditions vulnerability in the packet forwarding engine PFE of Juniper Networks Junos OS on EX4k Series and QFX5k Series platforms allows an unauthenticated network-adjacent attacker flapping an interface to cause traffic between VXLAN Network...

CVE-2025-30644

A Heap-based Buffer Overflow vulnerability in the flexible PIC concentrator FPC of Juniper Networks Junos OS on EX2300, EX3400, EX4100, EX4300, EX4300MP, EX4400, EX4600, EX4650-48Y, and QFX5k Series allows an attacker to send a specific DHCP packet to the device, leading to an FPC crash and...

CVE-2025-30644: Heap-based Buffer Overflow

A Heap-based Buffer Overflow vulnerability in the flexible PIC concentrator FPC of Juniper Networks Junos OS on EX2300, EX3400, EX4100, EX4300, EX4300MP, EX4400, EX4600, EX4650-48Y, and QFX5k Series allows an attacker to send a specific DHCP packet to the device, leading to an FPC crash and...

The vulnerability of the Flexible PIC Concentrator module in Juniper Networks’ Junos OS-based ACX5448 routers allows a hacker to induce a service failure.

The vulnerability of the Flexible PIC Concentrator FPC module in Juniper Networks’ Junos OS-based ACX5448 routers lies in the fact that resources are not released after their useful life has expired. Exploiting this vulnerability allows a remote attacker to cause service interruptions...

PT-2022-1474 · Juniper Networks · Junos

Name of the Vulnerable Software and Affected Versions: Juniper Networks Junos OS on ACX5448 versions 18.4 through 18.4R3-S10 Juniper Networks Junos OS on ACX5448 versions 19.1 through 19.1R3-S5 Juniper Networks Junos OS on ACX5448 versions 19.2 through 19.2R1-S8 Juniper Networks Junos OS on ACX54...

Juniper Networks Junos OS 资源管理错误漏洞

Juniper Networks Junos OS is a Juniper Networks network operating system for the company's hardware devices. The OS provides a secure programming interface and the Junos SDK. A resource management error vulnerability exists in the Juniper Networks Junos OS, which arises from an uncontrolled...

CVE-2020-1653: Improper Handling of Invalid Use of Special Elements

On Juniper Networks Junos OS devices, a stream of TCP packets sent to the Routing Engine RE may cause mbuf leak which can lead to Flexible PIC Concentrator FPC crash or the system to crash and restart vmcore. This issue can be trigged by IPv4 or IPv6 and it is caused only by TCP packets. This iss...